Shimano Hollowtech II external bearing bottom brackets with non-replaceable bearings. Designed for Hollowtech II MTB crank sets. Product Features Labyrinth seals for durability in wet conditions Shimano Reference Number:
Spec: For installing and removing of 12-notch external bearing bottom bracket cups with an outside diameter of 46mm Compatibility: SRAM DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, Hawk
Spec: For installing and removing of 12-notch external bearing bottom bracket cups with an outside diameter of 46mm Compatibility: SRAM DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, Hawk