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Super narrow HG chain for 10-speed
Shimano's Ultegra R8000 continues to deliver virtually the identical performance of Dura Ace at a price the self-sponsoring racer can afford
you can save a bundle
With an HG-X11 special asymmetric plate design and Shimano's new SIL-TEC surface treatment
3 kg Fits frame dimensions All sizes down to 20” junior bikes
Shimano BB-UN55 Bottom Bracket Brand_Castelli Super narrow HG chain forShimanos 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)