The R1 Concepts drilled-and-slotted brake rotor is a black replacement specified for the front-left position on 1988–1991 BMW M3. The catalog describes a drilled and slotted braking surface and a black finish for that application and wheel location. Check the year range and front-left designation when ordering to ensure compatibility with your M3.
R1 88-91 BMW M3 Front Left Drilled & Slotted Black Brake Rotor