Galfer Super Bike Rotors for the Suzuki GSX-R 1000 05-08, Suzuki GSX-R 750 06-07 and Suzuki GSX-R 600 06-07 the ALL new SUPERBIKE rotors feature 420 high carbon SS material, laser cut, heat treated, then grounded, machined, heat treated again, and grounded a 2nd time to ensure flatness. These are the ultimate rotors.