Shimano Dura-Ace BB-7710 68x109.5mm Threaded Track Bottom Bracket

Designed specifically for use on the track, the Dura-Ace 7710 series bottom bracket takes Shimano's engineering expertise to the velodrome. Using Shimano's Octalink splined interface to maximise power transfer, the BB-7710 is optimised for use with Shimano's Dura-Ace track series components.. Dura-Ace Track 7710 Series
. Track cycling specific design
. 8-splined Octalink interface
. Threaded bottom bracket
. Size: 68x109.5mm
. Weight: 245g (approx.)