Shimano XTR SM-CRM90 Single Chainring
The Shimano XTR SM-CRM90 chainring is a 1x11 specific chainring. It features outstanding build quality and a 1x specific tooth shape. Shimano uses larger, more squared off teeth made especially for chain retention. This no chain drop technology is called Dynamic Chain Engagement which eliminates the need for chain retention devices so you can ride full gas without the fear of dropping your chain.
- 1 x 11 specific chainring
- Choose from 30, 32, 34 or 36 teeth
- Dynamic Chain Engagement
- Proprietary chain retention technology