Shimano Dura-Ace 7710 Track Bottom Bracket

Precision engineered Shimano 7710 Dura-Ace Track Bottom Bracket uses Shimano's Octalink splined system. 22mm diameter chrome-moly hollow pipe billet axle reduces weight.
Splined interface provides a more rigid crank assembly compared to tapered counterparts.
Compound bearing structure - ball and needle bearings support the spindle to reduce flex, Maintenance-free sealed cartridge design prevents corrosion and is easy to install, Average weight 255g.

• Type: Shimano Octalink Splined bottom bracket
• Axle Material: Chrome-moly hollow pipe billet axle
• Bearings: Ball and needle bearings
• Weight: 255g