AP Floating Disk Bobbin Kit

These AP Racing CP4135-107K12 Rotor Bobbins fit BTCC-spec 368 mm brake rotors, providing a secure, high-strength floating connection between the rotor ring and bell.

Essential for any AP Racing big-brake setup, these bobbins ensure proper thermal expansion, smooth rotor float, and consistent braking performance under extreme heat and high-load track conditions.

Can be used with other Rotors and Bells, Please check fitment.

Part no. CP4135-107K12

1 set = 1 disk replacement kit