The R1 Concepts drilled black brake rotor for 2017–2021 Mercedes‑Benz CLS450 is a replacement rotor for the rear right wheel, listed with a drilled face and black coating. It fits the stated model years and is intended for installation on the rear right side when replacing a worn or damaged rotor to maintain the vehicle's specified rotor arrangement.

R1 17-21 Mercedes-Benz CLS450 Rear Right Drilled Black Brake Rotor