The R1 Concepts drilled and slotted brake rotor for 1976–1984 Porsche 924, front left, is a black-finished replacement rotor that restores the pad contact surface on that application. It features drilled and slotted machining tailored to the front left position and is intended for use when replacing a worn rotor during brake service; inspect pads and mounting hardware during installation.
R1 76-84 Porsche 924 Front Left Drilled & Slotted Black Brake Rotor