Porsche 997 GT3 380mm Front Rotors

These GiroDisc 2-piece rotors are a direct replacement for the front rotors on the following Porsche vehicles:

• 997.1 GT3, GT3 RS & GT2 with factory PCCB option
• 997.2 GT3, GT3 RS & GT2 RS with or without factory PCCB option

If you are converting from PCCB rotors to the iron GiroDisc rotors, please make sure to also change the pads to a compound suitable for iron rotors. These rotors are compatible with both 5-lug and center lock hubs, and, for center lock cars, the hats are compatible with the center lock drive pins.

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: 380mm
Thickness: 34mm
Minimum thickness: 32mm
Weight: 24 lbs per rotor assembly
Vane count: 72 curved vanes
Replacement rings: D1-066

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