Shimano UN55 Square Taper Bottom Bracket 68mm x 113mm
The Shimano BB-UN55 bottom bracket is one of the most popular choices for touring and mountain bikes using a square taper crank. It’s simplicity and durability means easy servicing, and long life.
- Hollow spindle
- 68mm English
- 113mm spindle length
- 25% more durable than previous UN54 model
- Crank bolts not included
1 in stock