The R1 Concepts drilled black brake rotor for 2007–2017 Buick Acadia (rear right) is presented as the replacement rotor for that application. The product text specifies a drilled face and a black finish. Install at the rear-right hub and replace the companion rear-left rotor during brake service to maintain matched components across the axle.
R1 07-17 Buick Acadia Rear Right Drilled Black Brake Rotor