Shimano Dura-Ace CS-9000 11-Speed 13t 2nd position Cassette Cog compatibility-Bosch Active Line/Plus (MY 2017 and onwards) Hollowglide structure cuts weight yet

Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker more precise front shifting

USB rechargeable with 5 hours recharging time

making it more rigid and allowing the rim to be wider without adding material

what comes to mind

Ratchet EXP freehub bodies have no seal themselves as this sits on the hub shell

Shimano Dura-Ace CS-9000 11-Speed 13t 2nd position Cassette Cog compatibility-Bosch Active Line/Plus (MY 2017 and onwards) Hollowglide structure cuts weight yetShimano Dura Ace CS 9000 11 Speed 13t 2nd position Cassette Cog. Shimano Dura Ace CS 9000 & Ultegra CS 6800 11 Speed Cassette Cogs TECH SPECS Tooth Count 13