The R1 Concepts slotted black brake rotor for 2013–2019 Cadillac ATS, rear-left position, is a slotted replacement rotor finished in black. It provides a grooved braking surface to assist pad cleaning and consistent contact for the rear-left wheel on supported ATS models, restoring the braking surface to vehicle specifications.
R1 13-19 Cadillac ATS Rear Left Slotted Black Brake Rotor