• Precision engineered Dura-Ace 7700 bottom bracket for road Octalink splined system. • 22 mm 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 173 g.
