Shimano BB-UN300 Bottom Bracket - English 68 x 110mm Spindle Square Taper JIS. Shimano BB-UN300 Square Spindle Bottom BracketsFits JIS square-taper cranksets Crankarm fixing bolts sold separately Hollow spindle
- TECH SPECS
| Bottom Bracket Shell I.D. | 1.37 |
| BB/Frame Interface | English |
| BB Shell Width (mm) | 68 |
| Spindle Interface Type | Square Taper JIS |
| Spindle Length | 110 |
| Defined Color | Black |
