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Shimano ES51 68 x 121mm Octalink V2 Spline English Bottom Bracket. Shimano BB-ES51 Octalink V2 Bottom BracketsFits Shimano Octalink V2 Spline Cranksets
Crankarm fixing bolts not included
- TECH SPECS
| Bottom Bracket Shell I.D. | 1.37 |
| BB/Frame Interface | English |
| BB Shell Width (mm) | 68 |
| Weight | 270 |
| Spindle Interface Type | Shimano Octalink V2 |
| Spindle Length | 121 |
| Defined Color | Black |