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Shimano Dura-Ace R9100 Hollowtech II English Bottom Bracket. Shimano Dura-Ace BB92 BB9000 Hollowtech II Bottom Brackets
- TECH SPECS
| Bottom Bracket Shell I.D. | 1.37 |
| BB/Frame Interface | English |
| BB Shell Width (mm) | 68 |
| Weight | 65 |
| Spindle Interface Type | Shimano Hollowtech II |
| Defined Color | Black |