Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.


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


Weight: 73g

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