Hyperglide 10-Speed chain

and generous 1

The Enduro 305 features I9's exceptional 6 pawl HYDRA freehub body

you have the protection you need

and Workout Duration Tracking

Birzman Bottom Bracket Cup Tool Adapter (for BB9000 & BBR60) sale Hyperglide 10-Speed chainConvenient adapter allows you to use your standard Hollowtech II BB tool on a BB9000 or BBR60 bottom bracket. Constructed of hardened steel Laser etched makings indicate BB type Insert into any Hollowtech II bottom bracket tool for compatibility with newer generation 39mm and 41mm outer diameter Shimano external bottom brackets like those found on Dura Ace 9000, XTR 9000 and Ultegra 6800