The R1 Concepts drilled black brake rotor for 2005–2011 Cadillac CTS (rear left) is presented as a replacement rear‑wheel rotor for the driver-side rear position. The description specifies a drilled rotor with a black finish and lists fitment to Cadillac CTS models spanning 2005 through 2011 for the rear-left location.

R1 05-11 Cadillac CTS Rear Left Drilled Black Brake Rotor