BMW M3 E9X / E92 BTCC Custom Rotor Bells – 368 mm x 36 mm for AP Racing CP9660 Calipers | XC3 Engineering AP Calipers the CP9668 uses a deeper

the CP9668 uses a deeper 25mm pad

Black Anodised for aesthetics and longevity

PFC describes the 11 compound as a development of its 01 compound

- 4lb Anti-knockback springs fitted

Manufactured from hardened

BMW M3 E9X / E92 BTCC Custom Rotor Bells – 368 mm x 36 mm for AP Racing CP9660 Calipers | XC3 Engineering AP Calipers the CP9668 uses a deeperProduct Overview Upgrade your BMW M3 E9X or E92 with our bespoke BTCC spec rotor bells from XC3 Engineering. Machined to exact tolerances to mate 368 mm 36 mm rotors to your stock hub, these bells ensure correct fitment and geometry for use with AP Racing CP9660 calipers. Perfect for track builds, clubsport cars, or performance road setups delivering precise rotor alignment, reliable braking performance, and long term durability. Kit Details and