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  • Shimano BB-UN300 68mm x 118mm Square Taper Bottom Bracket

Shimano BB-UN300 68mm x 118mm Square Taper Bottom Bracket

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          Description
          Used and installed by 80% of the world's bike shops, the Shimano UN300 is a tried-and-tested unit that will have you pedalling smoothly for years to come. This model has a 68mm shell and a 118mm Axle which is a direct swap out for the Brompton unit. This bottom bracket is only compatible with the Brompton Spider Crank.
          • Simple and reliable square taper bottom bracket
          • Replaces both BB-UN26 and BB-UN55
          • Sealed cartridge bearings
          • For bicycles equipped with a chain case, select BB-UN300-K