Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon BB-UN300 Bottom Bracket - for Use With Chaincase by Shimano Cycling Save -69% $26.99 One Color / EBBUN300KB27X - $26.99 One Color Color Chevron down icon EBBUN300KB27X Size Chevron down icon Availability: Translation missing: en.general.icons.icon_check_circle icon Only 4 left! 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Product Locator by Locally Notify me when back in stock Email address Email me when available Find the Chaincase Bottom Bracket, Bb-Un300-K, Spindle: Square Type, Shell: Bsa 68mm, Spindle: Xl118mm, W/Fixing Bolt Near Me.