GIRODISC 2-PIECE REAR BRAKE ROTORS 2022 2023 PORSCHE GT3 911 992 -EXCLUDES PCCB

The Girodisc system is a direct replacement for the OE 380mm rear discs on the 992 Porsche GT3 with factory iron (steel) rotors. No modifications are necessary, and it allows the use of unmodified factory pads. The disc will bolt directly to the car and work with factory calipers.

The central hat section of the rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum.  The disc is made from their own proprietary cast iron, poured in the USA and machined from start to finish in-house at Girodisc.  The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.

The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.

Once the Girodisc system is in place, simply replace the cast iron rotor when needed.

Sold/priced per pair.

GiroDisc specializes in engineering and manufacturing two-piece rotor solutions for various applications, from the Subaru WRX to the Lamborghini Aventador. Direct bolt-on two-piece rotors from GiroDisc are lightweight, reducing an average of four to eight pounds of unsprung weight, and offer superior heat dissipation over traditional one-piece rotors, translating to improved braking performance and eliminating the likelihood of stress fractures in the rotor surface with repeated heat cycles. GiroDisc also offers replacement rotor rings compatible with several popular big brake kit manufacturers, including replacement hardware at no additional cost.