Wheels Manufacturing BSA Bottom Bracket - Shimano Hollowtech II Spindle ABEC 3 Green MFPN=HBSP421B 13-tooth upper and 19-tooth lower

13-tooth upper and 19-tooth lower aluminum pulley wheels with Grade 3 Silicon Nitride balls

Diecast alloy crank arms

Quickly and easily determine the bearing that will fit in integrated headtubes and find replacement bearings for internal headsets

}FOX Seal Kit - MY19+ 32/34 SC 8mm shaft FIT4 Cartridge Rebuild

Wheels Manufacturing BSA Bottom Bracket - Shimano Hollowtech II Spindle ABEC 3 Green MFPN=HBSP421B 13-tooth upper and 19-tooth lowerWheels Manufacturing BSA Bottom Bracket Shimano Hollowtech II Spindle ABEC 3 Green. BSA Bottom Bracket TECH SPECS BB Shell Width (mm) 68 BB Shell Width (mm) 73 BB Frame Interface English Bottom Bracket Shell I. D. 1. 37 Defined Color Green Spindle Interface Type Shimano Hollowtech II Spindle Interface Type RaceFace EXI Spindle Interface Type FSA MegaExo Weight 105