Shimano – Square Taper Bottom Bracket – MTB – Standard Structure
Features
Shimano quality/performance cartridge bearing square bottom bracket
Better chainline stability with chain line stabilizer
Standard Structure
Specifications
| Shimano Series | BB-UN300 |
|---|---|
| Size | 73x122mmm |
| Bottom Bracket Type | Square |
| Shell Width | 73mm |
| Axle Length | 122mm |
| Remarks | w/ Crank arm fixing bolts |
| Structure | Standard |









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