The R1 Concepts drilled black brake rotor for 2015–2022 Cadillac ATS rear-left applications is supplied as the replacement rotor for that wheel position. The listing identifies a drilled surface and black finish to conform with the vehicle fitment; install this rotor where a rear-left drilled replacement is required for the Cadillac ATS models in the specified years.

R1 15-22 Cadillac ATS Rear Left Drilled Black Brake Rotor