![Prev Image Button](http://sunshinebike.com/cdn/shop/t/43/assets/icon-arrow-left.png?v=101168022804066646321701120158)
![Next Image Button](http://sunshinebike.com/cdn/shop/t/43/assets/icon-arrow-right.png?v=170264335526105695411701120158)
Shimano BB-UN300 English Square-JIS 68 x 127.5mm Bottom Bracket
SHIMANO - Square Type Bottom Bracket - MTB - Standard Structure
- SHIMANO quality/performance cartridge bearing square bottom bracket
- Better chainline stability with chain line stabilizer
- 3 structures available
- Standard, E-type, chain case options
- Adapter material: Aluminum