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Shimano
Shimano Nexus 21t Cog
Shimano Nexus 21t Cog
Product ID: GM040521-25
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View full detailsDescription
Shimano Nexus 21t Cog
- Shimano Nexus and Alfine cogs will work with either 1/8" or 3/32" chains
- Fits coaster brake and Internally geared hubs with 3-tab spline pattern drivers
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