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Hope threaded bottom bracket internal sleeve BSA 30mm axle 73mm shell
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Internal sleeve to help seal the internal face of the BB bearings from moisture.
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Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Attribution — Share Alike
Install with bottom bracket to make sealed tube for the axle/bearings. Prevents moisture in the frame from sitting directly agaisnt the internal bearing face in poorly draining frames and causing poor bearing life.