The R1 Concepts slotted black brake rotor for 2016–2020 Buick ELR, rear-left position, is a slotted replacement rotor finished in black. Intended for the rear-left wheel on those ELR models, it provides a slotted braking surface to help clear pad residue and restore consistent rotor-to-pad contact for dependable braking at that location.
R1 16-20 Buick ELR Rear Left Slotted Black Brake Rotor