Audi C7 S6, S7, RS7 & D4 S8 Rear Rotors

These GiroDisc 2-piece rotors are a direct replacement for the rear rotors on the Audi C7 S6/S7, D4 S8 and C7 RS7. These fully-floating assemblies help shed unsprung weight and rotating mass from the rear axle of the vehicle.

The rotor rings are machined from a proprietary casting made of high-carbon iron formulated to GiroDisc's specifications. This superior metallurgy results in a rotor that better withstands hard use, and the curved vanes act as a centrifugal pump pulling air in through the hub to cool the discs. The 2-piece design has a reusable hat which can be installed onto new rings when they need to be replaced.

All major components including the hats, rotor rings, and drive pins are manufactured in-house at our facility in Bellingham, WA from domestically-sourced materials. The hat is made from 6061-T6 aluminum and coated in a black anodize finish. The drive pins are made from a high-strength steel alloy and cadmium-plated for corrosion resistance. All rotors are assembled with spring clips and spring washers for race-ready float while also being street-friendly with no noise from loose hardware.

Outer diameter: 352mm
Thickness: 22mm
Minimum thickness: 20mm
Weight: 14.3 lbs per rotor assembly
Vane count: 48 curved vanes
Replacement rings: D2-187

We recommend replacing the rings when they reach minimum thickness or if a crack forms leading to the edge of the ring.

Why 352mm and not 356mm? The factory rotors are advertised as having a diameter of 356mm. However, this is misleading as the "flower"-shaped rotors only measure to 356mm at the outer diameter of the "petals." The pad actually sits 2 millimeters inside from the outer edge of the petals, and we designed our rotors to match the location of the pads.