The BBInfinite BSA Shimano Threaded Bottom Bracket Cup works with all Shimano HollowTech road cranksets on the market, from Tiagra to Dura Ace.
Alloy cups are MilSpec MIL-A-8625 Type II anodized for extreme durability. Polymer labyrinth seal bearing covers with integrated bushings keep out dirt and debris while isolating the steel bearing races from the steel spindle, halting creaks, corrosion, and accelerated wear of the crank spindle itself. This bottom bracket for road bikes install with the common Park Tools BBT-9 bottom bracket wrench, but we recommend a socket type.
Frame Width: 68mm
Frame Diameter: BSA Threaded
Spindle Diameter: 24mm