The R1 Concepts slotted black brake rotor for 2003–2006 BMW Z4 (rear left) is a direct-fit replacement rotor specified for that wheel position and model years. The listing identifies a slotted face and black coating; this unit is intended as a like-for-like option for scheduled rotor replacement or brake system maintenance on the specified Z4 applications. Confirm left/right rear selection when ordering.
R1 03-06 BMW Z4 Rear Left Slotted Black Brake Rotor