Made by the drivetrain specialists, SunRace. This outboard bottom bracket covers 68 and 73mm diameter shells with included adaptor. English thread with a very simple easy installation, leaving a maintenance free bottom bracket.
- SunRace External Bottom Bracket
- For SunRace FCM97/98/99 Chainsets
- Covers 68/73mm with Adaptor
- Simple and Easy Installation
- English Thread
- Maintenance Free
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