The R1 Concepts slotted brake rotor for 2008–2013 BMW 135i (rear left) is specified as the rear left replacement with a slotted braking face and black finish. It restores the rear braking surface for the listed 135i applications while maintaining factory fitment. When replacing a single rotor, inspect and consider the opposite side to preserve braking balance and consistent pedal feel.
R1 08-13 BMW 135I Rear Left Slotted Black Brake Rotor