Road Threaded External-Cup Shimano Road Bottom Brackets


Size Guide
Thread Style
  • The BBInfinite BSA Shimano Threaded Bottom Bracket Cup works with all Shimano HollowTech road cranksets on the market, from Tiagra to Dura Ace.

    This road bike bottom bracket features alloy cups that 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 installs with the common Park Tools BBT-9 bottom bracket wrench, but we recommend a socket type.

  • Technical Specifications

    Weight: 93g

    Frame Width: 68mm

    Frame Diameter: BSA Threaded

    Spindle Diameter: 24mm