- Sram X-Sync wide-tooth, narrow-tooth chainring technology provides maximum chain control
- X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear
- Steel constuction offer improved durability and longevity
- Durable laser-etched chainring finish
- CHAINRING SRAM 40T DM X-SYNC APEX STL BK
Teeth: 40T
Material: Aluminum/Steel
Color: Black
Chain: 12sp
Tooth Type: Narrow/Wide