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clean design greatest value
Powerfully integrated brake performance
Lock your bikes to the bike rack and your bike rack to the towbar (locks included)Fits
HYPERGLIDE+ technology dedicated chain delivers greater chain retention
Shimano BB-UN55 Bottom Bracket Brand_Castelli clean design greatest valueShimanos BB UN55 bottom bracket carries the Shimano mark of a quality component. Its a sealed cartridge unit featuring English thread and a JIS Square Taper axle. For convenience, the BB UN55 comes assembled and greased, all ready for installation. SPECIFICATIONS Weight 313 gram Thread English thread Compatibility JIS Square Taper (shimano, sugino, truvativ, and most other cranks)