Shimano UN55 Bottom Bracket w/68mm Shell


  • Shimano's UN55 hollow spindle bottom bracket is a reliable and affordable bottom bracket. The UN55 features English threaded cups, hollow square taper spindle and sealed cartridge bearings

    • Shell width: 68mm, english threaded
    • Spindle length: 107, 110, 113 and 118.
    • Spindle: JIS square taper hollow spindle
    • Bearings: Sealed cartridge bearings
    • Weight: 280g

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