The R1 Concepts slotted brake rotor for Audi 90 Quattro (1990–1991) is a front-left replacement finished in black. Intended for the front-left wheel position on those model years, this slotted rotor is provided to match the documented fitment and to supply the slotted rotor configuration and finish identified for that application.
R1 90-91 Audi 90 Quattro Front Left Slotted Black Brake Rotor