A1-146 Girodisc Porsche 991 GT3 / GT3RS Front Rotors

A1-146 Girodisc Two-Piece Front Brake Rotors FITMENT: Porsche 991 GT3/GT3RS/GT2RS, Front (2014+) with steel brakes The Girodisc system is a direct replacement for the OEM front rotors on the Porsche 991 GT3, GT3RS, and GT2RS with OEM iron rotors. No modifications are necessary, including full use of factory unmodified pads unlike most aftermarket solutions for this application. The GIrodisc rotors will bolt directly to your car and work with OEM calipers perfectly. By upgrading your brakes with lightweight, high performance replacements -- as opposed to a big brake kit -- your factory brake bias and ABS efficiency are preserved. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade-12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.