The R1 Concepts drilled-and-slotted black brake rotor for 2012–2018 BMW 120i (rear right) is a replacement rotor featuring drilled and slotted machining intended to aid heat dissipation and help maintain pad contact on the rear-right wheel. Presented in a black finish for visual uniformity, this overview is limited to the explicit Mexico rear-right application shown in the source and does not generalize compatibility.
R1 12-18 BMW 120i (Mexico) Rear Right Drilled & Slotted Black Brake Rotor