A2-155 Girodisc 2pc Rear Brake Rotors (OEM Steel)
These Rotors Fit The Following Cars (w/ OEM Steel Rotors):
- Porsche 981 Cayman GT4 Rear
- Porsche 718 Cayman GT4 Rear
- Porsche 991 Turbo/Turbo S Rear
This Girodisc system upgrades your Porsche OEM rear brakes to 380mm two-piece steel discs and aluminum hats. This two-piece floating rotor design will bolt directly to your Porsche GT4 or Turbo and work flawlessly with the OEM calipers using the included machined aluminum spacers. Especially when paired with the Girodisc A1-066 front Porsche rotors , upgrading your brakes to lightweight, high-performance Girodisc rotors, you maintain the factory brake bias and ABS effectiveness. Much lighter than the OEM rotors, Girodisc rotors reduce rotational and unsprung mass giving you stronger braking and faster suspension response.
Combined with Pagid or PFC racing brake pads and Performance RF1 racing brake fluid, Girodisc rotors are the ultimate solution to overheated, cracked OEM Porsche rotors that result from high-performance driving. The central hat of the rotor is made from 6061-T6 aircraft aluminum. The disc is manufactured in the USA from the same cast iron used by professional racing organizations. Its curved-vane design, developed in racing, acts like a centrifugal pump forcing cool air through the disc.
The disc and hat mount together through a floating mount system using ten cadmium plated, high-strength alloy steel drive pins manufactured by Girodisc. These drive pins transfer braking load while maintaining axial and radial float between the disc and hat to allow for heat expansion. Anti-noise spring washers eliminate the noise typically associated with floating rotors.
This two-piece Girodisc design allows for disc-only replacement, reusing the hat to minimize maintenance costs.
Sold/priced per pair.
Features:
• Built for racing reliability and consistent performance
• Compatible with demanding track environments
• Designed for perfect fit and easy installation
FAQs:
Is this part track-proven? Yes, it has been tested extensively under racing conditions.
Does it require professional installation? While not required, professional installation is recommended for best performance.
Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility.
Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.
