The R1 Concepts drilled brake rotor for 2003–2006 BMW Z4 (rear right) is a vehicle-specific replacement finished in black with a drilled braking surface for service or upgrade use. Specified for the rear-right position on compatible Z4 models, it replaces worn or damaged rotors during brake maintenance and restores a consistent braking face across the indicated model years.
R1 03-06 BMW Z4 Rear Right Drilled Black Brake Rotor