Reinforced Hollowtech Crankarms for track riding
OCTALINK Splined BB Interface
BCD: 144mm, 5 Bolt
Bottom Bracket Compatibility: Shimano BB-7700/7710
Chainline: 42.5mm
Recommended Spindle Length: 109.5mm
BB Shell Width Compatibility: 68/70mm
Chainring sold separately (45-55t Compatible)
Weight: 505g