Shimano BB-UN55 Bottom Bracket British Thread - 68 - 107mm
The Shimano BB-UN55 Bottom Bracket British Thread
is a popular sealed cartridge bottom bracket with a lightweight hollow spindle. Attaching your bike to the crankset, this bottom bracket ensures your crankarm rotates like a dream. Plus, the sealed design keeps out all the nasty stuff like mud, dirt and water, which means it’ll keep working perfectly for even longer.
Shimano BB-UN55 Bottom Bracket British Thread - 68 - 107mm Extra Info
Square tapered spindle
The slim body allows clearance for cable routing under the bottom bracket
Quick and easy to install without the need for adjustment