Shimano Cog for 3S-N
The Shimano Cog for 3S-N is a genuine steel replacement sprocket for Nexus and Alfine internally geared hubs, with a matching snap ring also available. It's the part to swap when changing gearing or replacing a worn cog on a city or commuter bike running one of these hubs.
- Shimano, 3S-N, 18T cog, Silver, Y32203220
- For Nexus and Alfine
- 05: SG-8R20, Snap Ring
Pairs well with
Shimano Cog for 3S-N
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