Box Two Prime 9 Derailleur (Black) (9 Speed) (X-Wide Cage) (Clutch)

While everyone else keeps adding more and more gears, the Box Two Prime 9 Groupset takes a different approach. The engineers at Box decided that sometimes simple is better so they developed a groupset with a wide ratio range over only 9 cogs. The benefit is that fewer gears reduce the chain angle on the low end; making the chainline more direct across the whole range; improving component longevity and power transfer. The rear derailleur boasts a limited-slip clutch with instant engagement and constant torque which prevents dropped chains and minimizes chain slap. Features: Prime 9 Technology for less derailleur travel and better chainline, less wear, and improved lifespan Tri-Pack limited slip clutch Forged inner and outer cage Pivot-Tech cable stay Sealed bushing pulleys 3D forged linkages Not compatible with Shimano direct mount derailleur hangers (requires traditional derailleur hanger) Specifications: Speed: 9 Speed Shifter Compatibility: Box Prime 9 Shift Mechanism: Cable Actuated Max. Tooth: 50T (X-Wide Cage) Min. Tooth: 11T Chain Wrap Capacity: 39T Cage Material: Forged Steel Chain Retention: Clutch Color: Black Weight: 290g (X-Wide Cage)