The R1 Concepts drilled-and-slotted black brake rotor for 1988–1991 BMW M3 (rear left) is a vehicle-specific replacement rotor offered for the stated mounting location. It features a drilled and slotted braking face and a black finish, and the explicit year, model and side callout helps buyers confirm fitment when matching a rear-left rotor to their M3 during maintenance or part replacement.
R1 88-91 BMW M3 Rear Left Drilled & Slotted Black Brake Rotor