Replacement Rotors: PRK.225.380.320.23050.09.01.F

These replacement rotor rings fit 2009-2011 (911) 997.2 GT3 / GT3 RS / GT2 RS front with OEM iron brakes 2009-2011 (911) 997.2 GT3 / GT3 RS / GT2 RS front with PCCB Includes: One pair of Paragon Performance 390mm x 36mm (15.35” x 1.42") 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 Part # (w/ black hard anodized hat): P2R.231.390.360.22920.09.01.01.F Part # (w/ hard anodized hat): P2R.231.390.360.22920.09.01.02.F 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. Designed for enthusiasts who want confident fitment, strong thermal stability, and repeatable braking performance.

Key Features

• Direct replacement rotor rings for Paragon or compatible factory hats where specified
• High-carbon cast iron construction for stable thermal performance and consistent pedal feel
• Directional vane and slotted design to improve cooling, pad cleaning, and braking consistency
• Direct bolt-on fitment for the listed application
• Includes rotor hardware for a complete service where noted by the manufacturer
• Sold as a pair

Fitment

2009-2011 (911) 997.2 GT3 / GT3 RS / GT2 RS front with OEM iron brakes 2009-2011 (911) 997.2 GT3 / GT3 RS / GT2 RS front with PCCB Includes: One pair of Paragon Performance 390mm x 36mm (15.35” x 1.42") 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 Part # (w/ black hard anodized hat): P2R.231.390.360.22920.09.01.01.F Part # (w/ hard anodized hat): P2R.231.390.360.22920.09.01.02.F 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.

Specifications

• Position: Front
• Rotor to hat mounting system: D-Bobbin (Long) - 12 bolt Great upgrade from OEM cross-drilled discs Direct replacement of: OEM Mercedes part # 2314211812 / A2314211812 / 2224212612 / A2224212612 / 2314210612 / A2314210612 Fits: 2009-2011 (911) 997

• Specifications:

  Diameter: 380mm (14.96")

  Thickness (new): 32mm (1.26")

  Thickness (min.): 30mm (1.18")

  Type: 2-piece floating

  Face Pattern: Slotted

  Vented / Solid: Directional ventilated

  Number of Vanes: 48

  Hat Material: 6061-T6 aluminum

  Friction Ring Material: CM-250 high carbon alloy cast iron

  Rotor Finish: CBN turned

  Cross Reference:

  OEM Porsche 99735140992 / 99735141092 / 99735103100 / 98135103201
  

  GiroDisc A1-127

  Essex 13.01.20015

Availability: Made to Order

Best For: Porsche Street and Track Drivers

These rotors are well suited for Porsche owners who expect sharp pedal feel, stable braking under heat, and fitment confidence on performance-focused street cars and occasional track-day builds. They are especially appealing to buyers who want service parts that feel appropriate for the character of the car rather than generic replacements.

FAQ

Are these complete rotors or replacement rings?
This listing is for a complete 2-piece rotor assembly where specified, with the hats included and the parts assembled ready to install.

Do these reuse factory hats?
No. On listings sold as complete Paragon 2-piece rotor assemblies, the rotor hats are included. If your vehicle originally uses a factory 2-piece rotor, some other service-part listings may reuse the OE hats, but this product is sold as a complete assembly.

Do slotted rotors improve braking?
Slots 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.

When should rotor rings be replaced?
A 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.

Should I replace pads at the same time?
Yes, 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.

Brake Rotor Technology

Why high-carbon rotors matter
High-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.

Directional vane cooling
Directional 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.

Slotted rotor surface
Slots 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.

When to Replace Rotor Rings

Rotor 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.

Other common signs include visible heat checking or cracking, brake pulsation, heavy scoring, and rotor thickness approaching the service limit.

Why Replace Rotor Rings Instead of the Whole Rotor?

This application uses a 2-piece design because separating the friction ring from the hat improves serviceability, heat management, and weight control. Compared with a heavy one-piece replacement, a quality 2-piece assembly can better suit performance-oriented vehicles where repeated heat cycles matter.

Common Mistakes When Replacing Rotors

• Reusing worn pads on a fresh rotor surface
• Skipping the pad and rotor bedding process
• Not cleaning or inspecting the hat, hardware, and mounting faces
• Ignoring brake fluid condition during brake service
• Ordering the wrong configuration for the vehicle or hat type

Taking care of these details helps the new rotor deliver the braking feel, wear life, and consistency it was designed to provide.

Recommended Companion Parts

Rotor 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.

Need help confirming fitment or choosing the right supporting parts?
Our team specializes in performance brake systems and can help you choose the right combination for your vehicle and how you use it.