Shimano FC-9100 Dura Ace Crankset 2x11 Speed Crank Arm Length:175mm This unit is ideal for

This unit is ideal for a flat tire repair kit and/or on-the-go tool kit

USB-C waterproof charging(cable not included)

40mm diameter

Machined aluminum shell threads together for precise bearing alignment and frame fit

Shimano FC-9100 Dura Ace Crankset 2x11 Speed Crank Arm Length:175mm This unit is ideal for4 arm construction cranksetNew designed crank armIconic designRedesign the gear teeth profile to fit wider gear pitchHOLLOWGLIDEBest balance for lighter weight ( 7g) and efficiencyShorter length of rear center with O. L. D. 135mmOptimum power transferAdapted for race specific disc brake systemMaintains high rigidity and reduces weight OUTER RING MATERIAL Aluminum CFRP AVERAGE WEIGHT 609g, ,621g THREADED BB SHELL WIDTH 68,70 CRANK ARM FINISH Anodized