The SHIMANO FC-7710 Dura Ace Track Crankarm - an advantage on the track.
The SHIMANO FC-7710 Dura Ace Track Crankarm has been developed for use in Track cycling. It has a typical Track bike bolt circle diameter of 144 mm (5-arm) and can only be equipped with one chainring (sold separately). It is an Octalink crank with 8 teeth, which provides more stiffness compared to square tapered systems. In order to save weight, the aluminium crank arms are hollow forged. With the FC-7710, you will gain fractions of a second advantage that all too often make the difference between victory and defeat in the velodrome.
Series: Dura Ace 7700 Crankarm Material: aluminium Crankarm Length: 165.0 mm Chainline: 42.5 mm Q-Factor: 136.3 mm Compatible BSA Shell Width: 68 mm Recommended Bottom Bracket: BB-7710 or BB-7700 Octalink 109.5 mm axle (not included)