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HYPERGLIDE+ technology dedicated chain delivers greater chain retention
J-kit option available: Yes
Zinc-Alloy plated outer plate
you can save a bundle
this beginner complete is best suited to progress into the more advanced rider
Shimano BB-UN55 Bottom Bracket Brand_Castelli HYPERGLIDE+ technology dedicated chain deliversShimanos 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)
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