The Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers.
Our rotor is larger than the OEM rotor at 350mm, providing greater braking force and cooling capacity.
The central hat section is made from U.S. sourced 6061-T6 aircraft-grade aluminum.
The disc is made from proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design which forces cooling air through the disc.
The rotor and hat have a floating mount system, which utilizes 10 high-strength alloy-steel drive pins, manufactured by Girodisc in the USA and cadmium plated for long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc.
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 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 in pairs.
Girodisc Rear 350mm 2-piece Rotor Upgrade (991 C2S/C4S) | Buy Motorsports Performance Parts Online
