The R1 Concepts Geo-Carbon drilled and slotted rotor for 1999–2008 BMW Z4 (front left) is a front-left replacement rotor specified for that vehicle range. It uses a Geo-Carbon friction face with drilled holes and machined slots on the braking surface. Presented for the listed application, the rotor is intended as the correct front-left replacement when servicing brakes on the specified Z4 models.
R1 99-08 BMW Z4 Front Left Drilled & Slotted Geo-Carbon Rotor