Precision engineered Dura-Ace 7700 bottom bracket for road Octalink splined system.Key Features:22 mm diameter chrome-moly hollow pipe billet axle reduces weight,Splined interface gives 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.
