Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.
Features
Bottom bracket
Lightweight to offset weight disadvantage of drivetrain. -19.3g (sm-bb93 vs. Sm-bb91-41a)
Smoother rotation
Better sealing performance
Durable enough for mountain bike usage
Fits various frame
For threaded bottom bracket
Specifications
Weight: 73g
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