The R1 Concepts Geo-Carbon drilled-and-slotted rotor for the front left of 2004–2010 BMW 645Ci applications is a replacement rotor featuring drilled holes and slots to assist pad contact and aid heat dissipation. Specified for the 645Ci front left position, it’s intended for shoppers performing front brake service or replacing aging rotors on those BMW model years.
R1 04-10 BMW 645Ci Front Left Drilled & Slotted Geo-Carbon Rotor