The R1 Concepts slotted black brake rotor for 2011–2016 BMW Z4 is specified for the rear left wheel position. The description calls out the vehicle years and wheel location and identifies the rotor as slotted with a black finish for that application. Confirm rear-left fitment and compatibility with your Z4’s brake components before installation.
R1 11-16 BMW Z4 Rear Left Slotted Black Brake Rotor