Shimanos BBR60 Ultegra R8000 Hollowtech II bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency The inner bearing is for use in BSA bottom bracket housings The bearing is done by high quality sealed deep groove ball bearings Attention Due to the small screwin depth it is not suitable for use with spacers Key Features intended use Road Cyclocross Material bearing shell aluminum Material bearings steel Bearing type BSA Inner bearing housing width 68 mm Inner bearing housing 348 mm with BSA thread Crank shaft diameter 24 mm Compatibility crank Hollowtech II cranks of Shimano Ultegra cranks Stock Shimano Ultegra Tool holder Hollowtech II tool TLFC25 adapter Color Black

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