Product description
BB-UN300
SHIMANO - Square Type Bottom Bracket - MTB - Standard Structure
Square Type Bottom Bracket
- SHIMANO quality/performance cartridge bearing square bottom bracket
- Better chainline stability with chain line stabilizer
- Replaces both BB-UN26 and BB-UN55
- Sealed cartridge bearings
- Cr-Mo axle
- Crank nuts/bolts not included.
