The R1 Concepts drilled black brake rotor for the rear left of 2013–2019 Cadillac ATS applications brings a shopper-facing replacement option that matches the vehicle's specified fitment. Intended as a direct-fit replacement, this rotor features a drilled face and black finish to maintain appearance while serving the vehicle's braking system in the specified rear-left position.

R1 13-19 Cadillac ATS Rear Left Drilled Black Brake Rotor