The R1 Concepts drilled brake rotor for 1978–1981 BMW 733i rear-right applications is a black-finished replacement rotor intended to fit the rear-right hub on those models. The drilled face aligns with the listed specification and provides a cataloged option for replacing worn rear rotors. It’s aimed at owners restoring or maintaining proper rear braking hardware on compatible 733i cars.

R1 78-81 BMW 733i Rear Right Drilled Black Brake Rotor