The R1 Concepts drilled-and-slotted front left brake rotor for 1990–1991 Audi 90 Quattro is a black-finished replacement listed for that application. The drilled-and-slotted machining gives a purposeful appearance while matching the rotor surface geometry expected by the vehicle, offering a practical option to refresh worn front braking components and maintain correct pad seating on the specified Audi 90 Quattro.
R1 90-91 Audi 90 Quattro Front Left Drilled & Slotted Black Brake Rotor