Shimano Dura-Ace R9100 Hollowtech II English Bottom Bracket Cycling Parts The mountainFLOW eco-wax SKIN WAX

The mountainFLOW eco-wax SKIN WAX is water based and non toxic

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The kit even includes a Wilderness First Aid manual for reference in the field

Primers on mountain weather and avalanche safety

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Shimano Dura-Ace R9100 Hollowtech II English Bottom Bracket Cycling Parts The mountainFLOW eco-wax SKIN WAXThe Shimano Dura Ace R9100 bottom bracket is the English threaded bearing unit for Hollowtech II cranksets at the top of Shimano's road lineup. Designed for frames with 68mm or 73mm BSA threaded shells, it provides smooth, low friction rotation built to Dura Ace standards. Preload adjustment is handled externally, making installation and fine tuning straightforward with a standard bottom bracket wrench. Compatible with Dura Ace and Ultegra Hollowtech