The R1 Concepts drilled black brake rotor for the rear left of 2016–2020 Buick ELR applications is supplied as a replacement matched to that rear-left fitment. Presented as a direct-fit option, this rotor has a drilled surface and black finish and is intended to replace the original rear-left rotor while matching the vehicle's listed ELR years.
R1 16-20 Buick ELR Rear Left Drilled Black Brake Rotor