- Components
- Bottom brackets
- shimano bb-7700 dura ace bottom bracket
- Precision engineered Dura Ace 7700 bottom bracket for road octalink splined system.Features:22 mm diameter chrome-moly hollow pipe billet axle reduces weightSplined interface provides a more rigid crank assembly compared to tapered counterpartsCompound bearing structure - ball and needle bearings support the spindle to reduce flexMaintenance-free sealed cartridge design prevents corrosion and is easy to installAverage weight 173 g