DURA-ACE Track features race-proven Hollowtech Octalink Bottom Brackets. This is an NJS approved bottom bracket, with sealed bearings.
Specifications:
- Series: DURA-ACE TRACK 7710
- JIS (English BSC) Thread
- BB Shell Width: 68mm
- Spindle Length: 109.5mm
- Spindle Material: Chromoly-Steel
- Weight: 244g
Photo Credit: Shimano
