This is OneUp Component's 104 Oval Traction Ring.
- 12% ovality offers greater traction, 115 degree clocking maximizes power stroke
- 30 tooth is the only oval ring that fits all 104BCD rings, using unique countersunk spacers and M5 Torx bolts
- Narrow-wide teeth prevent unwanted chain drop
- Built-in offset for ideal chainline, meaning a quieter drivetrain
- Excellent mud shedding performance for extended ring life
- Compatible with 9-12 speed chains, allowing a 1X set up on most any drivetrain
- Made from 7075-T6 aluminum alloy