The R1 Concepts drilled black brake rotor for 2015–2021 Mercedes‑Benz C300 Coupe & Convertible front right is identified as the replacement front-right rotor. The product description calls out a drilled disc with a black finish; this rotor mounts on the front right braking assembly to restore the described drilled configuration when performing brake service or replacing the rotor.
R1 15-21 Mercedes-Benz C300 Coupe & Convertible Front Right Drilled Black Brake Rotor