Description
Shimano Nexus 21t Cog Silver. Shimano Nexus & Alfine Cogs
- Compatible with both 1/8″ and 3/32″ chains, offering versatile use across various bike setups
- Designed to fit coaster brake and internally geared hubs featuring a 3-tab spline pattern driver for secure installation
- TECH SPECS
| Tooth Count | 21 |





