The R1 Concepts drilled-and-slotted black brake rotor for 2012–2020 BMW 320i (front left) is a replacement rotor featuring drilled and slotted machining meant to assist heat dispersion and maintain pad surface contact on the front-left wheel. The black finish keeps a coherent appearance; this overview is constrained to the explicit Mexico front-left application named in the source and does not infer wider compatibility.
R1 12-20 BMW 320I (Mexico) Front Left Drilled & Slotted Black Brake Rotor