Shimano BB-7710 Bottom Bracket 68X109.5MM Dura-ace Track

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