RacingBrake 2299 Front Two-Piece Slotted Surface Mount Brake Rotor for Volkswagen Golf R Precise scallop cut improves airflow, reduces weight and enhances the look Forged aluminum alloy rotor hat reduces weight and provides extra strength and stiffness Uniform coating around all surface to prevent rusting and oxidation on rotor and hat Double cross cut fine precision grinding (after EDP) to assure tightest tolerance on run out, parallelism, thickness variation