The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a front and rear replacement rotor specified for 2004–2010 BMW 645Ci applications. As a GeoPerformance-style rotor it features drilled holes and slots intended to help clear the pad contact area and maintain consistent rotor face characteristics across ordinary use for the listed BMW model years.
DFC 04-10 BMW 645Ci Front & Rear Drilled & Slotted Geoperformance Rotors