{"title":"Brake Rotors","description":null,"products":[{"product_id":"rotor-rings-295x28mm-pcd177-8mm-12x9-5x15mm","title":"AP CP3580-1134\/5 replacement brake rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 295mm x 28mm (11.61” x 1.10”) - P.C.D. 177.8mm\u003cspan\u003e - I.D. 192.4mm - \u003c\/span\u003eD50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 11.44 lbs (5.19 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP3580-1134\/5 (\u003cspan\u003eCP3580-1134 \/ \u003cspan\u003eCP3580-1135 \/ CP3580-1134\/1135)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8003.295.1924.280.17780.12.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/paragonbrakes.com\/rotor-assembly-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8003.295.1924.280.17780.12.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47281839178036,"sku":"PRR.8003.295.1924.280.17780.12.03.L\/R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-295x192.4x28-12x9.5-PCD177.8-2__32879.jpg?v=1701903398"},{"product_id":"rotor-rings-295x28mm-pcd177-8mm-12x6-4mm","title":"AP CP3047-256\/7 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 295mm x 28mm (11.61” x 1.10”) - P.C.D. 177.8mm - I.D. 193mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 11.46 lbs (5.2 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP3047-256\/7 (\u003cspan\u003eCP3047-256 \/ \u003cspan\u003eCP3047-257 \/ \u003cspan\u003eCP3047-256\/257\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8003.295.1930.280.17780.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8003.295.1930.280.17780.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282044076340,"sku":"PRR.8003.295.1930.280.17780.03.03.L\/R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0601-T__82489.jpg?v=1701909892"},{"product_id":"rotor-rings-295x25-4mm-pcd177-8mm","title":"AP\/PFC CP5000-510\/1 \u0026 PFC Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 295mm x 25.4mm (11.61” x 1”) - P.C.D. 177.8mm\u003cspan\u003e - I.D. 204.35mm\u003c\/span\u003e - D44\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eAP Racing CP5000-510\/1 (\u003c\/span\u003e\u003cspan\u003eCP5000-510 \/ CP5000-511 \/ CP5000-510\/511)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003ePFC 295.25.0044.03\/04\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan id=\"docs-internal-guid-83aa9798-7fff-8daf-2cf4-291b4e2e66c0\"\u003ePart Number: PRR.8003.295.2044.254.17780.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8003.295.2044.254.17780.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282044174644,"sku":"PRR.8003.295.2044.254.17780.03.03.L\/R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0601-T__72120.jpg?v=1701909900"},{"product_id":"rotor-rings-285x27mm-pcd179mm","title":"AP\/Alcon CP5254-104\/5 \u0026 Alcon Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 285mm x 27mm (11.22” x 1.06”) - P.C.D. 179mm - D45\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of special formula high carbon alloy, it allows for an optimal bite, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 9.26 lbs (4.2 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eAP Racing CP5254-104\/5 (\u003c\/span\u003e\u003cspan\u003eCP5254-104 \/ CP5254-105 \/ CP5254-104\/105)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eAlcon DIV2207X387C20\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan id=\"docs-internal-guid-8da0b68d-7fff-046b-d65f-9e5dd81fdf13\"\u003ePart Number: PRR.8004.285.1945.270.17900.11.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8004.285.1945.270.17900.11.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282044764468,"sku":"PRR.8004.285.1945.270.17900.11.01.L\/R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-285x194.5x27-10x9.5-PCD179-2__97705.jpg?v=1701909907"},{"product_id":"rotor-rings-295x32mm-pcd177-8mm","title":"Alcon DIV2135X507C24 replacement brake rotor rings","description":"\u003cp\u003e\u003cspan style=\"font-size: large; color: #032b68;\"\u003e\u003cstrong\u003eAlcon Replacement Rotor Rings 295mm x 32mm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: large; color: #032b68;\"\u003e\u003cstrong\u003e (11.61” x 1.26”) - P.C.D. 177.8mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.295.1934.320.17780.12.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Paragon Performance standard rotor","offer_id":47604899676468,"sku":"PRR.8004.295.1934.320.17780.12.03.L\/R","price":470.0,"currency_code":"USD","in_stock":true},{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47604899578164,"sku":"ROR.295.1934.320.17780.12.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0303-T__01591.jpg?v=1707755320"},{"product_id":"rotor-rings-330x28mm-pcd-203-2mm","title":"AP\/DBA CP3580-2898\/9 replacement brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 330mm x 28mm (12.99” x 1.10”) - P.C.D. 203.2mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eAP Racing CP3850-2898\/9 (\u003c\/span\u003e\u003cspan\u003eCP3850-2898 \/ CP3850-2899 \/ \u003cspan\u003eCP3850-2898\/2899\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eDBA52935.1\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePFC 330.28.0049.03\/04\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eParagon Specifications:\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eOutside Diameter \"A\": 330mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eThickness \"B\": 28mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eP.C.D. \"M\": 203.2mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eNumber of Mounting: 12\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eSize of Mounting: 6.4mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eType of Mounting: Round\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eInternal Diameter \"C\": 228mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eInside Flange Diameter \"D\": 190mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eMtg. Flange Thickness \"H\": 5.6mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eType of Flange Face: Step Up +0.15mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eMax. Pad Depth: 51mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eNumber of Vanes: 48\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eAir Vane Gap: 14.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan id=\"docs-internal-guid-d98e3f28-7fff-ec40-0b44-98fb190a5dab\" style=\"font-size: medium;\"\u003ePart Number: PRR.8005.330.2280.280.20320.03.03.L\/R\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8005.330.2280.280.20320.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282044928308,"sku":"PRR.8005.330.2280.280.20320.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1009-T__90886.jpg?v=1701909921"},{"product_id":"rotor-rings-332x28mm-pcd-196mm","title":"Alcon DIV2235X673 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 332mm x 28mm (13.07” x 1.10”) - P.C.D. 196mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e\u003cspan\u003e Alcon DIV2235X673\u003c\/span\u003e\u003cspan\u003eS36L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan id=\"docs-internal-guid-1489f87b-7fff-e613-0e69-ba707fc3790d\"\u003ePart Number: PRR.8005.332.2180.280.19600.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8005.332.2180.280.19600.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282045059380,"sku":"PRR.8005.332.2180.280.19600.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1009-T__71800.jpg?v=1701909929"},{"product_id":"rotor-rings-332x28mm-pcd-203-2mm","title":"Alcon DIV2197X019 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 332mm x 28mm (13.07” x 1.10”) - P.C.D. 203.2mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.332.2270.280.20320.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620140368180,"sku":"ROR.332.2270.280.20320.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620140433716,"sku":"PRR.8005.332.2270.280.20320.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_2558a25f-3a91-45c9-be70-8acd37fdd6a8.png?v=1707760654"},{"product_id":"rotor-rings-277x9-6mm-pcd-176-75mm","title":"AP CP2866-178 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 277mm x 9.6mm (10.91\" x 0.38\") - P.C.D. 176.75mm - D40\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features greater thermal capacity and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e2-piece design\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 5.11 lbs (2.32 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP2866-178\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003ePart Number: PRR.8006.277.1920.096.17675.01.03.L\/R\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8006.277.1920.096.17675.01.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282045255988,"sku":"PRR.8006.277.1920.096.17675.01.03.L\/R","price":420.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0716__33376.jpg?v=1701909942"},{"product_id":"rotor-rings-280x9-5mm-pcd-175mm-d42","title":"AP CP2866-223 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 280mm x 9.5mm (12.01\" x 0.43\") - P.C.D. 175mm - D42\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features greater thermal capacity and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e2-piece design\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs \u003cspan\u003e5.31 lbs (2.41 kg)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cstrong\u003eReplacement of\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eAP Racing CP2866-223\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan\u003ePRR.8006.280.1915.095.17500.01.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8006.280.1915.095.17500.01.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282045387060,"sku":"PRR.8006.280.1915.095.17500.01.03.L\/R","price":420.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0716__67264.jpg?v=1701909948"},{"product_id":"rotor-rings-310x28mm-pcd-190-5mm","title":"AP CP3047-212\/3 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 310mm x 28mm (12.20” x 1.10”) - P.C.D. 190.5mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 11.46 lbs (5.2 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP3047-212\/3 (\u003cspan\u003eCP3047-212 \/ \u003cspan\u003eCP3047-213 \/ \u003cspan\u003eCP3047-212\/213\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8008.310.2080.280.19050.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8008.310.2080.280.19050.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282045518132,"sku":"PRR.8008.310.2080.280.19050.03.03.L\/R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-310x208x28-12x6.4-PCD190.5-1__18114.jpg?v=1701909954"},{"product_id":"rotor-rings-320x25mm-pcd-181mm-d60","title":"Alcon DIV2213X581 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 320mm x 25mm (12.60\" x 0.98\") - P.C.D. 181mm - D60\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.320.1990.250.18100.03.93.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620111663412,"sku":"ROR.320.1990.250.18100.03.93.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620111761716,"sku":"PRR.8008.320.1990.250.18100.03.93.L\/R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_023be25d-1166-433c-bbe7-61e9fe109fe2.png?v=1707760657"},{"product_id":"rotor-rings-330x25-4mm-pcd-220-5mm","title":"AP\/DBA CP3580-1092\/3 replacement brake rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 330mm x 25.4mm (12.99” x 1”) - P.C.D. 220.5mm - D45\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of special formula high carbon alloy, it allows for an optimal bite, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance 330mm x 25.4mm (12.99\" x 1\") Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAP Racing CP3580-1092\/3 (\u003cspan\u003eCP3580-1092 \/ \u003cspan\u003eCP3580-1093 \/ \u003cspan\u003eCP3580-1092\/1093\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eDBA57330.1\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important; color: rgb(50, 50, 50); font-family: 'Nunito Sans', sans-serif; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bold; line-height: inherit; outline: 0px !important;\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"box-sizing: border-box; margin: 0px 0px 1.5rem 1.15rem; padding: 0px; list-style-position: outside; outline: 0px !important; color: rgb(50, 50, 50); font-family: 'Nunito Sans', sans-serif; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eOutside Diameter \"A\": \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"330mm\"}'\u003e330mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"330mm\"}'\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eThickness \"B\": \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"25.4mm\"}'\u003e25.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eP.C.D. \"M\": \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"220.5mm\"}'\u003e220.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eNumber of Mounting: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":12}'\u003e12\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eSize of Mounting: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"6.4mm\"}'\u003e6.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eType of Mounting: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"Round\"}'\u003eRound\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eInternal Diameter \"C\": \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"239.2mm\"}'\u003e239.2mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"206mm\"}'\u003e206mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"5.4mm\"}'\u003e5.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eType of Flange Face: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.15mm\"}'\u003eStep Up +0.15mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eMax. Pad Depth: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"45mm\"}'\u003e45mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eNumber of Vanes: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":48}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5rem; padding: 0px; outline: 0px !important;\" dir=\"ltr\"\u003e\u003cspan style=\"box-sizing: border-box; outline: 0px !important; font-size: medium;\"\u003eAir Vane Gap: \u003cspan style=\"box-sizing: border-box; outline: 0px !important;\" data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"14mm\"}'\u003e14mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8008.330.2392.254.22050.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8008.330.2392.254.22050.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282045780276,"sku":"PRR.8008.330.2392.254.22050.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1009-T__89707.jpg?v=1701909967"},{"product_id":"rotor-rings-343x28mm-pcd-216mm-d50","title":"Alcon DIV2175X521 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 343mm x 28mm (13.5\" x 1.1\") - P.C.D. 216mm - D50  C\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eommonly used on Alcon Advantage Extreme Kits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance use we recommend the Alcon\/Pro-Systems replacement rotor. For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eOutside Diameter \"A\": 343mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eThickness \"B\": 28mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eP.C.D. \"M\": 216mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eNumber of Mounting: 12\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eSize of Mounting: 6.4mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eType of Mounting: Round\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eInternal Diameter \"C\": 235mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eInside Flange Diameter \"D\": 201mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eMtg. Flange Thickness \"H\": 5.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eType of Flange Face: Flat\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eMax. Pad Depth: 54mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eNumber of Vanes: 48\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"mso-list: l0 level1 lfo1; tab-stops: list .5in;\" class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 11.0pt; mso-ascii-font-family: Aptos; mso-ascii-theme-font: minor-latin; mso-hansi-font-family: Aptos; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi;\"\u003eAir Vane Gap: 14mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul type=\"disc\" style=\"margin-top: 0in;\"\u003e\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics. These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car. This also helps reduce or eliminate the potential for brake shudder due to improper bedding. \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003eUsed in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads. These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"color: #9c0000;\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: ROR.343.2350.280.21600.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620176445748,"sku":"ROR.343.2350.280.21600.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620176478516,"sku":"PRR.8008.343.2350.280.21600.03.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_682b553c-a81a-4c7c-a094-fa77386da334.png?v=1707760660"},{"product_id":"rotor-rings-343x28mm-pcd-215-9mm","title":"AP CP6565-160\/1 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 343mm x 28mm (13.50” x 1.10”) - P.C.D. 215.9mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 13.36 lbs (6.06 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP6565-160\/1 (\u003cspan\u003eCP6565-160 \/ \u003cspan\u003eCP6565-161 \/ \u003cspan\u003eCP6565-160\/161\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8008.343.2375.280.21590.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8008.343.2375.280.21590.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282046173492,"sku":"PRR.8008.343.2375.280.21590.03.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-343x237.5x28-12x6.4-PCD215.9-2__37568.jpg?v=1701909985"},{"product_id":"paragon-performance-rotor-rings-355x28mm-p-c-d-233mm-d50","title":"Alcon DIV2175X558 replacement brake rotor rings","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 355mm x 28mm (13.98” x 1.10”) - P.C.D. 233mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.355.2480.280.23300.08.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620051796276,"sku":"ROR.355.2480.280.23300.08.01.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620051992884,"sku":"PRR.8008.355.2480.280.23300.08.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_683841bc-cddd-450f-9439-ec2c1e0bb8e5.png?v=1707760663"},{"product_id":"rotor-rings-355x28mm-pcd-235mm","title":"Alcon DV355\/28\/54-12\/235 replacement brake rotor rings","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 355mm x 28mm (13.98” x 1.10”) - P.C.D. 235mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance use we recommend the Alcon\/Pro-Systems replacement rotor. For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics. These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car. This also helps reduce or eliminate the potential for brake shudder due to improper bedding. \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003eUsed in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads. These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eOutside Diameter \"A\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"355mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e355mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eThickness \"B\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"28mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e28mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eP.C.D. \"M\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"235mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e235mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Mounting: \u003cspan data-sheets-value='{\"1\":3,\"3\":12}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e12\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eSize of Mounting: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"6.4mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e6.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Mounting: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"Round\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003eRound\u003c\/span\u003e\u003cspan data-sheets-value='{\"1\":2,\"2\":\"248mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eInternal Diameter \"C\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"248mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e248mm\u003c\/span\u003e\u003cspan data-sheets-value='{\"1\":2,\"2\":\"222mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"222mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e222mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"6mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e6mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Flange Face: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.15mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003eStep Up +0.15mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMax Pad Depth: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"53.5mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e53.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Vanes: \u003cspan data-sheets-value='{\"1\":3,\"3\":48}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: ROR.355.2480.280.23500.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620212425012,"sku":"ROR.355.2480.280.23500.03.01.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620212457780,"sku":"PRR.8008.355.2480.280.23500.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_a362930e-dea3-4202-b57f-e89c2cb3baf4.png?v=1707760666"},{"product_id":"rotor-rings-355x28mm-pcd-247-6mm","title":"AP CP3781-2006\/7 replacement brake rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 355mm x 28mm (13.98” x 1.10”) - P.C.D. 247.6mm - D46\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP3781-2006\/7 (\u003cspan\u003eCP3781-2006 \/ \u003cspan\u003eCP3781-2007 \/ \u003cspan\u003eCP3781-2006\/2007\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8008.355.2616.280.24760.03.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8008.355.2616.280.24760.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282046828852,"sku":"PRR.8008.355.2616.280.24760.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0658-T__65487.jpg?v=1701910005"},{"product_id":"rotor-rings-330x32mm-pcd-203-2mm-id-220mm","title":"AP\/DBA CP3581-222\/3 \u0026 Stasis Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003ePerformance Rotor Rings 330mm x 32mm (12.99” x 1.26”) - P.C.D. 203.2mm - I.D. 220mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance use we recommend the Alcon\/Pro-Systems replacement rotor. For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics. These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car. This also helps reduce or eliminate the potential for brake shudder due to improper bedding. \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003eUsed in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads. These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 14.7 lbs (6.65 kg)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eAP Racing CP3581-222\/3 (\u003c\/span\u003e\u003cspan\u003eCP3581-222 \/ CP3581-223 \/ \u003cspan\u003eCP3581-222\/223\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eAlcon DV330\/32\/55-12\/203\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eDBA\u003c\/span\u003e\u003cspan\u003e57904.1\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eOutside Diameter \"A\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"330mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e330mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-value='{\"1\":2,\"2\":\"330mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003eThickness \"B\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"32mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e32mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eP.C.D. \"M\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"203.2mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e203.2mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Mounting: \u003cspan data-sheets-value='{\"1\":3,\"3\":12}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e12\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eSize of Mounting: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"6.4mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e6.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Mounting: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"Round\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003eRound\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eInternal Diameter \"C\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"220mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e220mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"190mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e190mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"6.6mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e5.6mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Flange Face: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.15mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003eStep Up +0.15mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMax Pad Depth: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"55mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e55mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Vanes: \u003cspan data-sheets-value='{\"1\":3,\"3\":48}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eAir Vane Gap: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"17mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e17mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003e\u003cimg class=\"__mce_add_custom__\" title=\"rotor-legend-1000.jpg\" src=\"https:\/\/cdn11.bigcommerce.com\/s-8pb2bpl705\/product_images\/uploaded_images\/rotor-legend-1000.jpg\" alt=\"rotor-legend-1000.jpg\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8009.330.2200.320.20320.03.03.L\/R and\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSKU: DV330\/32\/55-12\/203L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Paragon Performance standard rotor","offer_id":48023069819188,"sku":"PRR.8009.330.2200.320.20320.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true},{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":48023069851956,"sku":"DV330\/32\/55-12\/203L\/R","price":655.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1050-T__30911.jpg?v=1701910011"},{"product_id":"rotor-rings-330x32mm-pcd-203-2mm-id-227mm","title":"AP CP3581-1130\/1 replacement brake rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 330mm x 32mm (12.99” x 1.26”) - P.C.D. 203.2mm - I.D. 227mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 14.22 lbs (6.45 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of: \u003c\/strong\u003eAP Racing CP3581-1130\/1 (\u003cspan\u003eCP3581-1130 \/ \u003cspan\u003eCP3581-1131 \/ \u003cspan\u003eCP3581-1130\/1131\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8009.330.2270.320.20320.12.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.330.2270.320.20320.12.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282047189300,"sku":"PRR.8009.330.2270.320.20320.12.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-330x227x32-12x9.5-PCD203.2__60937.jpg?v=1701910017"},{"product_id":"rotor-rings-330x32mm-pcd-208mm-d50","title":"Alcon DIV2198X485 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 330mm x 32mm (12.99\" x 1.26\") - P.C.D. 208mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.330.2270.320.20800.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620124705076,"sku":"ROR.330.2270.320.20800.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620124737844,"sku":"PRR.8009.330.2270.320.20800.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_17254dc4-0f3f-4efe-9881-134eb3eec109.png?v=1707760668"},{"product_id":"rotor-rings-330x32mm-pcd-203-2mm-id-227-4mm","title":"AP CP5000-206\/7 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 330mm x 32mm (12.99” x 1.26”) - P.C.D. 203.2mm - I.D. 227.4mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP5000-206\/7 (\u003cspan\u003eCP5000-206 \/ \u003cspan\u003eCP5000-207 \/ \u003cspan\u003eCP5000-206\/207\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8009.330.2274.320.20320.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.330.2274.320.20320.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282047549748,"sku":"PRR.8009.330.2274.320.20320.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1050-T__37335.jpg?v=1701910030"},{"product_id":"rotor-rings-332x32mm-pcd-210mm-d50","title":"Endless ER941RCH replacement brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 332mm x 32mm (13.07\" x 1.26\") - P.C.D. 210mm - 10x8.1mm Mounting - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong style=\"font-size: medium;\"\u003eReplacement of:\u003c\/strong\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003cspan\u003eEndless ER941RCH \/ ER941REH\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan\u003ePRR.8009.332.2250.320.21000.18.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.332.2250.320.21000.18.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282047680820,"sku":"PRR.8009.332.2250.320.21000.18.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1009-T__00883.jpg?v=1701910037"},{"product_id":"rotor-rings-332x32mm-pcd-210mm-12x6-4mm-mounting-d50","title":"Endless\/DBA ER939RCH replacement brake rotor (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 332mm x 32mm (13.07\" x 1.26\") - P.C.D. 210mm - 12x6.4mm Mounting - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong style=\"font-size: medium;\"\u003eReplacement of:\u003c\/strong\u003e\u003cspan style=\"font-size: medium;\"\u003e Endless ER939RCH \/ ER939REH\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan\u003ePRR.8009.332.2300.320.21000.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cstrong style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.332.2300.320.21000.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282047910196,"sku":"PRR.8009.332.2300.320.21000.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-04__28820.jpg?v=1701910044"},{"product_id":"rotor-rings-335x28mm-pcd-214mm-d50","title":"Alcon DIV2158X530 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Rotor Rings 335mm x 28mm \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: large;\" data-mce-style=\"font-size: large;\"\u003e\u003cstrong\u003e(13.19\" x 1.10\") - P.C.D. 214mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.  **Hardware pictured is not included**\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\" data-mce-style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\" data-mce-style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e Alcon DIV2135X507C24 \/ DIV2135X507\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOutside Diameter \"A\": 335mm\u003c\/li\u003e\n\u003cli\u003eThickness \"B\": 28mm\u003c\/li\u003e\n\u003cli\u003eP.C.D. \"M\": 214mm\u003c\/li\u003e\n\u003cli\u003eNumber of Mounting: 12\u003c\/li\u003e\n\u003cli\u003eSize of Mounting: 6.4mm\u003c\/li\u003e\n\u003cli\u003eType of Mounting: Round\u003c\/li\u003e\n\u003cli\u003eInternal Diameter \"C\": 233mm\u003c\/li\u003e\n\u003cli\u003eInside Flange Diameter \"D\": 201mm\u003c\/li\u003e\n\u003cli\u003eMtg. Flange Thickness \"H\": 7mm\u003c\/li\u003e\n\u003cli\u003eType of Flange Face: Flat\u003c\/li\u003e\n\u003cli\u003eMax. Pad Depth: 50mm\u003c\/li\u003e\n\u003cli\u003eNumber of Vanes: 48\u003c\/li\u003e\n\u003cli\u003eAir Vane Gap: 15mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\" data-mce-style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\" data-mce-style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" data-mce-href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003eRotor Assembly Instructions\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.335.2330.280.21400.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Paragon Performance standard rotor","offer_id":47607795253556,"sku":"PRR.8009.335.2330.280.21400.03.03.L\/R-2","price":695.75,"currency_code":"USD","in_stock":true},{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47607795220788,"sku":"ROR.335.2330.280.21400.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-ring-01__44370.jpg?v=1707756284"},{"product_id":"rotor-rings-335x32mm-pcd-214mm-d50","title":"Alcon DIV2158X531 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 335mm x 32mm (13.19\" x 1.26\") - P.C.D. 214mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.335.2350.320.21400.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620152328500,"sku":"ROR.335.2350.320.21400.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620152426804,"sku":"PRR.8009.335.2350.320.21400.03.03.L\/R","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_9689b153-7d74-4286-9a45-912cda553873.png?v=1707760675"},{"product_id":"rotor-rings-340x32mm-pcd-210mm-d55","title":"Endless ER942RCH replacement brake rotor (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 340mm x 32mm (13.39\" x 1.26\") - P.C.D. 210mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e Endless ER942RCH \/ ER942REH\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan\u003ePRR.8009.340.2250.320.21000.18.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.340.2250.320.21000.18.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282049319220,"sku":"PRR.8009.340.2250.320.21000.18.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1__05947.jpg?v=1701910063"},{"product_id":"rotor-rings-343x32mm-pcd-215-9mm","title":"AP CP3581-542\/3 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 343mm x 32mm (13.50” x 1.26”) - P.C.D. 215.9mm - I.D. 230mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing part no. CP3581-542\/3 (CP3581-542\/543)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan id=\"docs-internal-guid-c00d6cc0-7fff-c17f-a757-a397eab2abbf\"\u003ePart Number: PRR.8009.343.2300.320.21590.03.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.343.2300.320.21590.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282049417524,"sku":"PRR.8009.343.2300.320.21590.03.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0658-T__47239.jpg?v=1701910068"},{"product_id":"rotor-rings-343x32mm-pcd-215-9-id-236mm","title":"AP CP3581-564\/5 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 343mm x 32mm (13.50” x 1.26”) - P.C.D. 215.9 - I.D. 236mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP3581-564\/5 (\u003cspan\u003eCP3581-564 \/ \u003cspan\u003eCP3581-565 \/ \u003cspan\u003eCP3581-564\/565\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8009.343.2360.320.21590.12.03.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.343.2360.320.21590.12.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282049777972,"sku":"PRR.8009.343.2360.320.21590.12.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0347-T__81734.jpg?v=1701910080"},{"product_id":"rotor-rings-343x34mm-pcd-224mm-d50","title":"Paragon Performance Rotor Rings 343mm x 34mm (13.5\" x 1.34\") - P.C.D. 224mm - D50","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 343mm x 34mm (13.5\" x 1.34\") - P.C.D. 224mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.343.2400.340.22400.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620200169780,"sku":"ROR.343.2400.340.22400.03.03.L\/R","price":815.15,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620200202548,"sku":"PRR.8009.343.2400.340.22400.03.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-01__25605.jpg?v=1701910086"},{"product_id":"rotor-rings-343x25mm-pcd-222mm-d50","title":"Alcon DIV2175X543 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 343mm x 25mm (13.5\" x 0.98\") - P.C.D. 222mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.343.2410.250.22200.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620162748724,"sku":"ROR.343.2410.250.22200.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620162814260,"sku":"PRR.8009.343.2410.250.22200.03.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_4772d7d5-165d-4cdc-9050-81dd2f3bfeb0.png?v=1707760677"},{"product_id":"rotor-rings-343x32mm-pcd-221mm-d50","title":"Alcon DIV2202X807 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 343mm x 32mm (13.5\" x 1.26\") - P.C.D. 221mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.343.2410.320.22100.03.03.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620187914548,"sku":"ROR.343.2410.320.22100.03.03.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620188012852,"sku":"PRR.8009.343.2410.320.22100.03.03.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_45950b64-c661-4f9f-8435-88a599b91e57.png?v=1707760680"},{"product_id":"rotor-rings-345x28mm-pcd-223mm","title":"Brembo\/DBA 09.5759.94\/95 Replacement Brake Rotors (Pair)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eParagon Performance Rotor Rings 345mm x 28mm (13.58” x 1.10”) - P.C.D. 223mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-value=\"{\" data-sheets-userformat=\"{\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-value=\"{\" data-sheets-userformat=\"{\"\u003eBrembo 09.5759.94\/95 \/ 09.5759.96\/97\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-value=\"{\" data-sheets-userformat=\"{\"\u003eDBA52915.1\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan data-sheets-value=\"{\" data-sheets-userformat=\"{\"\u003ePRR.8009.345.2370.280.22300.08.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cstrong style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.345.2370.280.22300.08.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282050793780,"sku":"PRR.8009.345.2370.280.22300.08.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0601-T__64130.jpg?v=1701910105"},{"product_id":"rotor-rings-355x32mm-pcd-228-6mm","title":"Rotor Rings 355x32mm - PCD228.6mm - I.D. 245mm - D55 Performance","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 355mm x 32mm (13.98\" x 1.26\") - P.C.D. 228.6mm - I.D. 245mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional 72 ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e72 Directional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan id=\"docs-internal-guid-1725b3a1-7fff-2a06-1e8c-3ae006d7f31a\"\u003ePart Number: \u003cspan\u003ePRR.8009.355.2450.320.22860.03.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eReplacement of\u003c\/span\u003e: \u003cspan\u003eAlcon DIV2175X270\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.355.2450.320.22860.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282050990388,"sku":"PRR.8009.355.2450.320.22860.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0147-T__30739.jpg?v=1701910112"},{"product_id":"rotor-rings-355x32mm-pcd-233-id-248-10x8-1-oval-mounting-d50","title":"Brembo\/DBA 09.5759.13\/23Replacement Brake Rotors (Pair)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eParagon Performance Rotor Rings 355mm x 32mm (13.98” x 1.26”) - P.C.D. 233mm - I.D. 248mm - 10x8.1mm Oval Mounting - D50\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eBrembo 09.5759.13\/23 \/ 09.5759.35\/45\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eDBA52923.1L\/R\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8009.355.2480.320.23300.08.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.355.2480.320.23300.08.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282051121460,"sku":"PRR.8009.355.2480.320.23300.08.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/1054-T-16__31040.jpg?v=1701910118"},{"product_id":"rotor-rings-355x32mm-pcd-233-id-248-10x8-1-round-mounting-d50","title":"Endless ER943RCH replacement brake rotor (pair)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eParagon Performance Rotor Rings 355mm x 32mm (13.98” x 1.26”) - P.C.D. 233mm - I.D. 248mm - 10x8.1mm Round Mounting - D50\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e Endless ER943RCH \/ ER943REH\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8009.355.2480.320.23300.18.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8009.355.2480.320.23300.18.01.L\/R\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eOutside Diameter \"A\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"335mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e355\u003cspan style=\"color: #000000;\"\u003emm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eThickness \"B\": 32\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003emm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eP.C.D. \"M\": 233mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Mounting: \u003cspan data-sheets-value='{\"1\":3,\"3\":10}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e10\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eSize of Mounting: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"9mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e8.1mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Mounting: Round\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eInternal Diameter \"C\": \u003c\/span\u003e\u003cspan style=\"font-size: medium;\" data-sheets-value='{\"1\":2,\"2\":\"227mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e248mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"184mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e209.2mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan data-sheets-value='{\"1\":2,\"2\":\"7mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e8mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Flange Face: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.15mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003eStep Up +2.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMax. Pad Depth: 53.5\u003cspan data-sheets-value='{\"1\":2,\"2\":\"54mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003emm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Vanes: \u003cspan data-sheets-value='{\"1\":3,\"3\":48}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eAir Vane Gap: \u003cspan data-sheets-value='{\"1\":2,\"2\":\"17mm\"}' data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}'\u003e19.3mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282051252532,"sku":"PRR.8009.355.2480.320.23300.18.01.L\/R","price":660.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-1146-T__02720.jpg?v=1701910125"},{"product_id":"rotor-rings-355x32mm-pcd-235mm-d50","title":"Endless ER940RCH replacement brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 355mm x 32mm (13.98\" x 1.26\") - P.C.D. 235mm - I.D. 248mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e Endless ER940RCH \/ ER940REH\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan\u003ePRR.8009.355.2480.320.23500.03.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.355.2480.320.23500.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282051744052,"sku":"PRR.8009.355.2480.320.23500.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0147-T__54810.jpg?v=1701910136"},{"product_id":"rotor-rings-355x32mm-pcd-233mm-id-250mm-d50","title":"Stoptech 355x32mm Replacement Brake Rotor","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eParagon Performance Rotor Rings 355mm x 32mm (13.98” x 1.26”) - P.C.D. 233mm - I.D. 250mm - D50\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cspan style=\"font-size: medium;\"\u003eReplacement for: \u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cspan style=\"font-size: medium;\"\u003eStopTech 31.737.1101.99 \/ 31.737.1102.99\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e StopTech 31.737.1101.99 \/ 31.737.1102.99\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eOutside Diameter \"A\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"335mm\"}'\u003e355\u003cspan style=\"color: #000000;\"\u003emm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003eThickness \"B\": 32\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003emm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eP.C.D. \"M\": 233mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Mounting: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":10}'\u003e10\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eSize of Mounting: 8.08x10.8mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Mounting: Oval\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003eInternal Diameter \"C\": \u003c\/span\u003e\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"227mm\"}' style=\"font-size: medium;\"\u003e250mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"184mm\"}'\u003e213mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"7mm\"}'\u003e8mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Flange Face: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.15mm\"}'\u003eStep Up +2.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMax. Pad Depth: 52.5\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"54mm\"}'\u003emm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Vanes: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":48}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAir Vane Gap: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"17mm\"}'\u003e17mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin: 5px 5px 5px 5px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_e3d6cd27-0d19-4a68-bd16-eee3867f615c_600x600.jpg?v=1713111042\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8009.355.2500.320.23300.08.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8009.355.2500.320.23300.08.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Left (Drivers)","offer_id":48162408562996,"sku":"PRR.8009.355.2500.320.23300.08.01.L","price":801.45,"currency_code":"USD","in_stock":true},{"title":"Right (Passenger)","offer_id":48162408595764,"sku":"PRR.8009.355.2500.320.23300.08.01.R","price":801.45,"currency_code":"USD","in_stock":true},{"title":"Pair (Left and Right)","offer_id":48162408530228,"sku":"PRR.8009.355.2500.320.23300.08.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/1054-T-16__61969.jpg?v=1701910142"},{"product_id":"rotor-rings-355x32mm-pcd-235mm-id-250mm","title":"Alcon\/DBA DIV2146X037\/DBA replacement brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 355mm x 32mm (13.98” x 1.26”) - P.C.D. 235mm - I.D. 250mm - D50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.355.2500.320.23500.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620235198772,"sku":"ROR.355.2500.320.23500.03.01.L\/R","price":1114.8,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620235264308,"sku":"PRR.8009.355.2500.320.23500.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_b1928a29-0873-4a18-ba89-61a804d91d7e.png?v=1707760684"},{"product_id":"rotor-rings-356x32mm-pcd-228-6mm-d55","title":"AP CP7177-210\/211GC Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 356mm x 32mm (14.02\" x 1.26\") - P.C.D. 228.6mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional 48 ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e48 Directional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 15.41 lbs (6.99 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing \u003cspan\u003eCP7177-210\/211GC \/ CP5773-102\/103GA\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cspan\u003ePRR.8009.356.2446.320.22860.12.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8009.356.2446.320.22860.12.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282052301108,"sku":"PRR.8009.356.2446.320.22860.12.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0203-T__22060.jpg?v=1701910155"},{"product_id":"rotor-rings-355x32mm-pcd-215-9mm","title":"AP\/DBA CP4542-106\/7 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 355mm x 32mm (13.98” x 1.26”) - P.C.D. 215.9mm - I.D. 244mm - 12x6.4mm Mounting - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs \u003cspan data-sheets-value=\"{\" data-sheets-userformat=\"{\" kg=\"\" lbs=\"\"\u003e7.67 KG (16.91 LBS)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAP Racing CP4542-106\/7 (\u003cspan\u003eCP4542-106 \/ \u003cspan\u003eCP4542-107 \/ \u003cspan\u003eCP4542-106\/107\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eAP Racing CP4542-306\/7 (CP4542-306 \/ CP4542-307 \/ CP4542-306\/307)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAlcon DIV2146X717C24L\/R (\u003cspan\u003eDIV2146X717 \/ \u003cspan\u003eDIV2146X717C24L \/ \u003cspan\u003eDIV2146X717C24R\u003c\/span\u003e\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eDBA52750.1\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003ePart Number:\u003cspan\u003e PRR.8010.355.2440.320.21590.03.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8010.355.2440.320.21590.03.01.L\/R\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eOutside Diameter \"A\": 355mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eThickness \"B\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"32mm\"}'\u003e32mm \u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"32mm\"}'\u003eP\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003e.C.D. \"M\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"215.9mm\"}'\u003e215.9mm\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"215.9mm\"}'\u003eN\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003eumber of Mounting: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":12}'\u003e12\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eSize of Mounting: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"6.4mm\"}'\u003e6.4mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Mounting: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"Round\"}'\u003eRound\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eInternal Diameter \"C\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"244mm\"}'\u003e244mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"195mm\"}'\u003e195mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"6.5mm\"}'\u003e6.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003e\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"6.5mm\"}'\u003eT\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003eype of Flange Face: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.02mm\"}'\u003eStep Up +0.02mm\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMax Pad Depth: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"55.5mm\"}'\u003e55.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Vanes: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":48}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAir Vane Gap: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"17.5mm\"}'\u003e17.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"17.5mm\"}' style=\"font-size: medium;\"\u003eWeight: \u003cspan data-sheets-userformat='{\"2\":12925,\"3\":{\"1\":0},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"12\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"7.67 KG (16.91 LBS)\"}'\u003e7.67 KG (16.91 LBS)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282052399412,"sku":"PRR.8010.355.2440.320.21590.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0658-T__08674.jpg?v=1701910161"},{"product_id":"rotor-rings-355x32mm-pcd-232-9mm-i-d-249mm-d50","title":"Alcon DIV2216X770S36 replacement brake rotor rings","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eAlcon Replacement Rotors 355mm x 32mm (13.98” x 1.26”) - P.C.D. 232.9mm - I.D. 249mm - D50\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.355.2490.320.23290.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620223795508,"sku":"ROR.355.2490.320.23290.03.01.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620223861044,"sku":"PRR.8010.355.2490.320.23290.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_ce5e9ff2-13f8-4b24-ab92-e52b1d8fc5b5.png?v=1707760687"},{"product_id":"rotor-rings-356x32mm-pcd-240mm-d46","title":"AP CP3581-1128\/1129 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 356mm x 32mm (14.02” x 1.26”) - P.C.D. 240mm - D46\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs \u003cspan data-sheets-value=\"{\" kg lbs data-sheets-userformat=\"{\"\u003e14.74 lbs (6.69 kg)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAP Racing CP3581-1128\/1129 (CP3581-1128 \/ \u003cspan\u003eCP3581-\u003c\/span\u003e1129\u003cspan\u003e\u003cspan\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003ePart Number:\u003cspan\u003e PRR.8010.356.2585.320.24000.03.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8010.356.2585.320.24000.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282052759860,"sku":"PRR.8010.356.2585.320.24000.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0658-T__40293.jpg?v=1701910173"},{"product_id":"rotor-rings-350x34mm-pcd-197mm-d65","title":"Brembo 09.9306.10\/20 Replacement Brake Rotors (Pair)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eParagon Performance Rotor Rings 350mm x 34mm (13.78” x 1.34”) - P.C.D. 197mm - D65\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e Brembo 09.9306.10\/20, Tarox RF35034AX\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8011.350.2070.340.18800.08.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8011.350.2140.340.19700.08.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282053218612,"sku":"PRR.8011.350.2140.340.19700.08.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/1054-T-16__04646.jpg?v=1701910180"},{"product_id":"rotor-rings-356x36mm-pcd-228-6mm-12x6-4mm-mounting","title":"AP CP5000-110\/1 Replacement Brake Rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 356mm x 36mm (14.01” x 1.42”) - P.C.D. 228.6mm - 12x6.4mm Mounting - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP5000-110\/1 (CP5000-110 \/ CP5000-111 \/ \u003cspan\u003eCP5000-110\/111\u003c\/span\u003e)\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8011.356.2446.360.22860.03.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8011.356.2446.360.22860.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282053284148,"sku":"PRR.8011.356.2446.360.22860.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0147-T__06574.jpg?v=1701910186"},{"product_id":"rotor-rings-356x36mm-pcd-228-6mm","title":"AP CP6972-1136\/7 replacement brake rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 356mm x 36mm (14.01” x 1.42”) - P.C.D. 228.6mm - 12x9.5mm Mounting - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 17.15 lbs (7.78 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e AP Racing CP6972-1136\/7 (\u003cspan\u003eCP6972-1136 \/ \u003cspan\u003eCP6972-1137 \/ \u003cspan\u003eCP6972-1136\/1137\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8011.356.2446.360.22860.12.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8011.356.2446.360.22860.12.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282053349684,"sku":"PRR.8011.356.2446.360.22860.12.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-355.6x244.6x36-12x9.5-PCD228.6-2__56218.jpg?v=1701910192"},{"product_id":"rotor-rings-378x36mm-pcd-240mm-12x9-5x15mm","title":"AP CP3718-2068\/9 replacement brake rotors (pair)","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eParagon Performance Rotor Rings 378mm x 36mm (14.88” x 1.42”) - P.C.D. 240mm - 12x9.5mm Mounting - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional 72 ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e72 Directional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWeighs 21.10 lbs (9.57 kg)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eOne pair\u003c\/strong\u003e Paragon Performance Rotor Ring (LH \u0026amp; RH)\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli dir=\"ltr\"\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDetailed installation manual\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAP Racing CP3718-2068\/9 (\u003cspan\u003eCP3718-2068 \/ \u003cspan\u003eCP3718-2069 \/ \u003cspan\u003eCP3718-2068\/2069\u003c\/span\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003eAP Racing CP5772-2068\/9 (CP5772-2068 \/ CP5772-2069 \/ \u003cspan\u003eCP\u003c\/span\u003e\u003cspan\u003e5772-2068\/2069)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan\u003ePart Number: PRR.8012.378.2640.360.24000.12.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: PRR.8012.378.2640.360.24000.12.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282053415220,"sku":"PRR.8012.378.2640.360.24000.12.01.L\/R","price":720.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/Rotor-ring-0203-T__11455.jpg?v=1701910198"},{"product_id":"rotor-rings-380x36mm-pcd-250mm-d55","title":"Alcon DIV2202X615 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 380mm x 36mm (14.96\" x 1.42\") - P.C.D. 250mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.380.2680.360.25000.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620357259572,"sku":"ROR.380.2680.360.25000.03.01.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620357292340,"sku":"PRR.8012.380.2680.360.25000.03.01.L\/R","price":720.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_b09a946a-b681-4ab1-8f05-e3c4eb58c199.png?v=1707760690"},{"product_id":"rotor-rings-380x35mm-pcd-258mm-d50","title":"Brembo\/DBA\/StopTech 380x35mm Replacement Brake Rotor (Pair)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large;\"\u003eParagon Performance Rotor Rings 380mm x 35mm (14.96” x 1.38”) - P.C.D. 258mm - D50\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eBrembo 09.8528.78\/88\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eDBA52385.1L\/R\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eStopTech 31.846.1x0x 380mmx35mm\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eParagon Performance Rotor Ring offers superior braking and cooling efficiency optimized for track and race applications. It features directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking under harsh track condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMade of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eVibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotor rings went through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. The floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. A slotted rotor improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface. Weighing less than most O.E. rotors while maintaining proper thermal capacity, our rotors improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eDirectional ventilation vanes for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFloating 2-piece design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eMinimizing brake fade \u0026amp; judder during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eReplacement of:\u003c\/strong\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eBrembo 09.8528.78\/88\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eDBA52385.1L\/R\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eStopTech 31.846.1x0x\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eOutside Diameter \"A\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"335mm\"}'\u003e380\u003cspan style=\"color: #000000;\"\u003emm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003eThickness \"B\": 35\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003emm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eP.C.D. \"M\": 258mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Mounting: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":10}'\u003e10\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eSize of Mounting: 8.1x10.25mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Mounting: Oval\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: medium;\"\u003eInternal Diameter \"C\": \u003c\/span\u003e\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"227mm\"}' style=\"font-size: medium;\"\u003e275mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eInside Flange Diameter \"D\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"184mm\"}'\u003e234.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMtg. Flange Thickness \"H\": \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"7mm\"}'\u003e8mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eType of Flange Face: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"Step Up +0.15mm\"}'\u003eStep Up +1mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eMax. Pad Depth: 52.5\u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"54mm\"}'\u003emm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eNumber of Vanes: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":3,\"3\":48}'\u003e48\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eAir Vane Gap: \u003cspan data-sheets-userformat='{\"2\":12797,\"3\":{\"1\":0,\"3\":1},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":[null,2,0]},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":2,\"11\":0,\"15\":\"Arial\",\"16\":10}' data-sheets-value='{\"1\":2,\"2\":\"17mm\"}'\u003e19.5mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_e3d6cd27-0d19-4a68-bd16-eee3867f615c_240x240.jpg?v=1713111042\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003ePart Number: PRR.8012.380.2750.350.25800.08.01.L\/R\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: medium;\"\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSKU: PRR.8012.380.2750.350.25800.08.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Enthusiast Drivers Who Want Fitment Confidence and Consistent Braking\u003c\/h4\u003e\u003cp\u003eThese rotors are best for drivers who care about correct fitment, predictable pedal feel, and repeatable braking performance under real use. They suit enthusiast street cars and dual-purpose builds where braking consistency matters more than generic catalog parts.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Default Title","offer_id":47282053644596,"sku":"PRR.8012.380.2750.350.25800.08.01.L\/R","price":720.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/1054-T-16__67568.jpg?v=1701910211"},{"product_id":"rotor-rings-355x36mm-pcd-228-6mm","title":"Alcon DIV2202X220 replacement brake rotor rings\/discs","description":"\u003cp\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cstrong\u003eAlcon Replacement Rotors 355mm x 36mm (13.98” x 1.42”) - P.C.D. 228.6mm - D55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003eWe have two options for replacement of these Alcon designed rotors. For racing and high performance  use we recommend the Alcon\/Pro-Systems replacement rotor.  For a more affordable version we carry Paragon Performance Rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eAlcon\/Pro Systems\u003c\/strong\u003e versions are machined at our facility in Mooresville, North Carolina from specially formulated grey cast iron providing the best in thermal stability, friction coefficient and heat transfer characteristics.  These rotors are Dyno-bedded after being precision machined. Dyno-bedding ensures the most reliable and stable rotor the moment you put it on the car.  This also helps reduce or eliminate the potential for brake shudder due to improper bedding.   \u003cem\u003e\u003cspan style=\"color: #9c0000;\"\u003eThese rotors are made to order and will take 4-6 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e Used in the highest level of motorsports including Daytona Prototypes, GT, and TransAm you are guaranteed the best rotor for your braking needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eParagon Rotors\u003c\/strong\u003e are made of CM-250 special formulated high carbon alloy cast iron, it allows for an optimal bite, thermal characteristics, high-temperature strength and durability. Rotor rings are heat treated to release stress in the rotor to avoid deformation and vibration then turned by state-of-the-art CBN surface machining to ensure better break-in with new brake pads.   These rotors offer solid performance on a budget and go through rigorous quality control procedures and inspections to ensure the rotor rings are fit for their purposes. \u003cem data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #9c0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #9c0000;\"\u003eThese rotors take 2-3 weeks to deliver.\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium; color: #062c64;\"\u003e\u003cstrong\u003eAdditional information:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eFloating 2-piece rotors\u003c\/strong\u003e allow thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads. Slotting  improves braking consistency by maintaining a clean contact surface and dissipate heat generated and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.  \u003cspan style=\"color: #790000;\"\u003eWe do not offer drilled rotors as these will almost always crack over time requiring replacement much earlier.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eWeight Savings.\u003c\/strong\u003e  Two piece rotors weigh less than most O.E. rotors while maintaining proper thermal capacity, this improves overall handling by saving unsprung mass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eDirectional ventilation vanes\u003c\/strong\u003e for optimal cooling performance and increased resistance to cracking. Run up to 30% cooler than O.E. rotors and increase cooling efficiency of heat removal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/files\/rotor-legend-1000_600x600.jpg?v=1707755577\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003eExtra\/replacement hardware is available for purchase. We recommend using new hardware when replacing rotors to ensure the rotor ring is attached to the aluminum hat properly. Please refer to our \u003cspan style=\"color: #0000ff;\"\u003e\u003ca href=\"https:\/\/alconkits.com\/blogs\/install-tips\/bobbin-installation-instructions\/\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eRotor Assembly Instructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e for torque specs and detailed instructions.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eSKU: ROR.355.2450.360.22860.03.01.L\/R\u003c\/p\u003e\u003ch4\u003eBest For: Audi and VW Performance Street Cars\u003c\/h4\u003e\u003cp\u003eThese rotors are ideal for Audi and VW owners who want confident fitment, crisp brake response, and better heat management for spirited street driving. They are especially well suited to MQB and other modern VAG performance platforms that see a mix of commuting, backroad driving, and occasional track use.\u003c\/p\u003e\u003ch4\u003eFAQ\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eDo these fit the factory rotor hats?\u003c\/strong\u003e\u003cbr\u003eThese rotor rings fit Paragon hats, or the original equipment hats when the vehicle came with a factory 2-piece rotor design. If your application uses a 1-piece factory rotor, these are not intended to bolt to an OE hat because there is no separate hat to reuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these complete rotors or replacement rings?\u003c\/strong\u003e\u003cbr\u003eThese are replacement rotor rings only. They are designed to service the braking surface while reusing the existing hat when the hat is compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo slotted rotors improve braking?\u003c\/strong\u003e\u003cbr\u003eSlots primarily improve pad cleaning and help maintain consistent braking feel under heat. They do not create a dramatic change in stopping distance by themselves, but they can help the system stay more consistent during repeated hard stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should rotor rings be replaced?\u003c\/strong\u003e\u003cbr\u003eA practical wear indicator is slot depth. When the slots become shallow and much less visible, the rotor is typically nearing the end of its effective service life. Rotor thickness, heat checking, cracking, and brake vibration should also be inspected during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace pads at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. Fresh pads help the new rotor surface bed in correctly and reduce the chance of uneven deposits, noise, or inconsistent pedal feel.\u003c\/p\u003e\u003ch4\u003eBrake Rotor Technology\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eWhy high-carbon rotors matter\u003c\/strong\u003e\u003cbr\u003eHigh-carbon cast iron offers better thermal stability than generic low-cost rotor materials. That helps the rotor maintain more consistent behavior as temperature rises, which is important on heavier vehicles and on cars driven aggressively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDirectional vane cooling\u003c\/strong\u003e\u003cbr\u003eDirectional internal vanes are designed to move air through the rotor more effectively, improving heat evacuation and helping the rotor recover more quickly between braking events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSlotted rotor surface\u003c\/strong\u003e\u003cbr\u003eSlots help keep the pad face clean by clearing away gases, dust, and debris. The result is more consistent pad contact and more repeatable braking feel, especially when the system is worked hard.\u003c\/p\u003e\u003ch4\u003eWhen to Replace Rotor Rings\u003c\/h4\u003e\u003cp\u003eRotor rings should be replaced when the friction surface shows meaningful wear, heat fatigue, or thickness loss. One of the easiest visual indicators is the depth of the rotor slots. As the rotor wears, the slots become shallower. When they are much less visible, the rotor is generally nearing the end of its useful service life.\u003c\/p\u003e\u003cp\u003eOther common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.\u003c\/p\u003e\u003ch4\u003eWhy Replace Rotor Rings Instead of the Whole Rotor?\u003c\/h4\u003e\u003cp\u003eOn vehicles that use 2-piece rotors, the friction ring can be replaced independently from the hat. That allows the wear component to be serviced without replacing the full assembly, which can reduce replacement cost while preserving the benefits of the 2-piece design.\u003c\/p\u003e\u003ch4\u003eCommon Mistakes When Replacing Rotors\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReusing worn pads on a fresh rotor surface\u003c\/li\u003e\n\u003cli\u003eSkipping the pad and rotor bedding process\u003c\/li\u003e\n\u003cli\u003eNot cleaning or inspecting the hat, hardware, and mounting faces\u003c\/li\u003e\n\u003cli\u003eIgnoring brake fluid condition during brake service\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong configuration for the vehicle or hat type\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTaking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.\u003c\/p\u003e\u003ch4\u003eRecommended Companion Parts\u003c\/h4\u003e\u003cp\u003eRotor service is also a good time to inspect or replace the brake pads, rotor hardware where applicable, and brake fluid. On performance applications, fresh pads and fluid often have as much impact on brake feel as the rotor itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNeed help confirming fitment or choosing the right supporting parts?\u003c\/strong\u003e\u003cbr\u003eOur team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.\u003c\/p\u003e","brand":"Paragon","offers":[{"title":"Alcon\/Pro System Pre-bedded rotor","offer_id":47620247585076,"sku":"ROR.355.2450.360.22860.03.01.L\/R","price":1289.0,"currency_code":"USD","in_stock":true},{"title":"Paragon Performance standard rotor","offer_id":47620247617844,"sku":"PRR.8014.355.2450.360.22860.03.01.L\/R","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/8534\/7636\/products\/PRSRotor-2_00867eed-2bbc-4f6c-bcdd-88297bdd28ab.png?v=1707760694"}],"url":"https:\/\/alconkits.com\/collections\/brake-rotors.oembed?page=4","provider":"Alcon Brake Kits","version":"1.0","type":"link"}