The R1 Concepts drilled-and-slotted black brake rotor for 2012–2018 BMW 118i (rear left) is a replacement rotor machined with drilled holes and slots to assist cooling and pad cleaning at the rear-left position. The black finish offers a consistent visual; this description follows the explicit Mexico rear-left application supplied in the source and avoids implying additional fitment beyond that listing.
R1 12-18 BMW 118i (Mexico) Rear Left Drilled & Slotted Black Brake Rotor