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The R1 Concepts Geo-Carbon drilled-and-slotted rotor for the front left of 2012–2018 BMW 428i is built to match that wheel position and year range. The drilled and slotted face paired with Geo-Carbon construction helps with thermal control and pad cleaning to support consistent brake performance. Fitment and position are taken directly from the explicit product description.
R1 12-18 BMW 428I Front Left Drilled & Slotted Geo-Carbon Rotor
