Paragon 2-piece Rear Rotors For M2 (F87) / M3 (F80) / M4 (F82/F83) with blue calipers

Take your BMW to the next level with Performance OE Replacement Rotors - Rear Pair. These 370mm x 24mm (14.57" x 0.94") rotors are designed specifically for your BMW M2 (F87), M3 (F80), or M4 (F82/F83), providing superior performance and handling. Upgrade your BMW and experience the ultimate driving adventure!

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.

Vibration is reduced as the rotor lateral run-out is kept within 0.03mm and well-balanced: variations are kept within 2 grams. All rotors went through rigorous quality control procedures and inspections to ensure the rotors 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 2-piece rotors improves overall handling by saving unsprung mass.

Aluminum hats are CNC machined from lightweight 6061-T6 aerospace grade aluminum for high strength and durability under extreme track conditions, then black hard coat/hard anodized to increase resistance to wear and corrosion. Mil-spec Type III anodized hats will not discolor under extreme heat, and are harder and more wear/scratch resistant. Unnecessary materials are taken out from the aluminum hats for maximum weight savings while maintaining proper structural integrity.
*Black hard coat and hard coat anodized hats are the same in terms of performance and durability.

• Direct bolt-on without any modifications and designed to work flawlessly with OEM ABS and brake system while maintaining factory brake bias. Compatible with OEM brake pads or aftermarket pads with the same pad depth (D)

• Directional ventilation vanes for optimal cooling performance, runs up to 30% cooler than O.E. rotors and increase cooling efficiency by up to 30%

• Floating 2-piece design

• Minimizing brake fade & judder during extended sessions

• Utilizes OEM E-brake by integrating iron sleeve into aluminum hat

• Weighs 19.6 lbs (8.9 kg) - save 1 lb of unsprung weight per rotor vs. OEM

• Rotor to hat mounting system: D-Bobbin (long) - 10 bolt

Direct replacement of: OEM BMW part number 34212284811 / 34212284812

Applications: M2 F87 (2016-2020), M3 F80 (2015-2018), M4 F82/F83 (2015-2020) with blue calipers

Does not fit vehicles with M Carbon Ceramic Brakes S2NKA

Includes:

• One pair of Paragon Performance 370mm x 24mm (14.57” x 0.94”) 2-piece rotor assemblies with black hard coat/hard anodized 6061-T6 aerospace grade aluminum hats, stainless steel bobbins, and anti-rattle clips (assembled and ready to install)

• Detailed installation manual

Extra/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 Rotor Assembly Instructions for torque specs and detailed instructions.

Specifications:

• Diameter: 370mm (14.57")
• Thickness (new): 24mm (0.94")
• Thickness (min.): 22mm (0.87")
• Type: 2-piece floating
• Face Pattern: Slotted
• Vented / Solid: Directional ventilated
• Number of Vanes: 48
• Hat Material: 6061-T6 Aluminum w/ integrated iron sleeve for e-brake
• Friction Ring Material: CM-250 high carbon alloy cast iron
• Rotor Finish: CBN turned
• Weight (per rotor): 19.6 lbs (8.9 kg)

Cross Reference:

• OEM BMW 34212284811 / 34212284812
• Centric/Stoptech 128.34161 / 128.34162
• Girodisc A2-186
• DBA 43299