The R1 Concepts slotted brake rotor for Audi 90 Quattro (1990–1991) is a front-right replacement finished in black. Provided for the front-right wheel position on the indicated years, this slotted rotor corresponds to the documented Quattro fitment and presents the slotted rotor style and black finish noted in the source.
R1 90-91 Audi 90 Quattro Front Right Slotted Black Brake Rotor