The R1 Concepts drilled black brake rotor for 2012–2020 Mercedes‑Benz SLC300 rear right is listed as the replacement rotor for that wheel position. The product description calls out a drilled disc and black finish; this rotor mounts at the rear right braking assembly to match the described drilled configuration when performing brake maintenance or part replacement.
R1 12-20 Mercedes-Benz SLC300 Rear Right Drilled Black Brake Rotor