Dura Ace bottom bracket for FC-7710 track cranks. The big, hollow rolled 22mm-axle of the bottom bracket reduces weight. The Octalink axle profile offers a firm fit. Reduced axle flexure ensured by needle and ball bearings. Key Features
- Octalink spline
- Non Sealed cartridge to minimise resistance
- Compatible with Dura Ace FC-7710 Track cranks.
- Weight: 220g