The R1 Concepts drilled-and-slotted rear right brake rotor for 1990–1997 Audi S4 is a black-finished rotor listed for that application. Its drilled-and-slotted surface provides a distinctive visual while aligning with the rotor profile required by the vehicle’s braking system, making it a sensible choice when replacing worn rear rotors to restore proper pad contact on the specified S4 years.
R1 90-97 Audi S4 Rear Right Drilled & Slotted Black Brake Rotor