The R1 Concepts drilled black brake rotor for 1990–1997 Audi S4 (front left) is a direct-fit replacement that restores the vehicle's braking surface with a drilled face and black finish. Specified for the front left position across those S4 years, it matches the original rotor mounting pattern and dimensions for correct fit during routine brake service.
R1 90-97 Audi S4 Front Left Drilled Black Brake Rotor