Shimano UN55 Square Taper Bottom Bracket - 68mm
Item Description
Shimano UN55 Square Taper bottom bracket replaces old bottom brackets so you can keep pedaling along efficiently, and without that ticking noise. Sealed cartridge bearings ensure lasting, smooth-spinning performance. Fits English-threaded 68mm bottom bracket shells; available in various spindle lengths (select from size drop-down list). Crank arms must be square taper JIS-compatible.
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