Girodisc Friction Ring Replacements for Porsche 991 GT3 Cup - Rear

Girodisc rear replacement friction rings for Porsche 991 GT3 Cup models with OE Iron Brakes. This is the rotor ring/friction ring only. Hats are not included. Size: 380x30mm SKU: D2-238 Axle: Rear For Full Disc Assembly Use p/n: (A2-238) *Sold/priced per pair* The Girodisc system is a direct replacement for the OE disc, no modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our 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 10 high-strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for long-lastin