The R1 Concepts Geo-Carbon drilled-and-slotted rotor for the rear left of 2010–2019 BMW 640i xDrive Gran Coupe is a position-specific braking rotor for that model and year span. Its drilled and slotted face and Geo-Carbon design help manage heat and evacuate pad debris to support consistent stopping under varied driving conditions. Fitment mirrors the explicit rear-left Gran Coupe listing.
R1 10-19 BMW 640I Xdrive Gran Coupe Rear Left Drilled & Slotted Geo-Carbon Rotor