Did you know that you could shop on our www.chainreactioncycles.com/us/en website?

    • Shimano UN53 Square Taper Bottom Bracket

  • Shimano UN53 Bottom Bracket Square Taper

    Genuine Shimano replacement parts

    Shimano UN53 Bottom Bracket Square Taper Features:

    • A good quality bottom bracket for traditional chainsets
    • Super-accurate bearings for smooth operation and improved durability
    • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
    • Lightweight hollow spindle
    • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
    • Fast and easy installation without adjustment
    • Narrow body allows clearance for cable routing under the bottom bracket

    Buy Shimano UN53 Bottom Bracket Square Taper from Chain Reaction Cycles, the worlds largest online bicycle store.


    • Currently Unavailable
    • We’re very sorry but we don’t know when this item will be back in stock.
  • Need help? Have a question?

    Get in contact with us

     Buying Guide

    We’ve got everything you need to know in our buying guide...