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

While everyone else keeps adding more and more gears, the Box One 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
• Adjustable Tri-Pack
• Limited slip clutch
• Forged inner and outer cage 
• Pivot-Tech cable stay 
• Sealed bearing pulleys 
• 3D forged linkages

Specifications:
Speeds: 9 
Max Cog: 50T
Cage Length: Long
Cage Width: X-Wide
Derailleur/Shift Compatibility: Box Prime 9
Color: Black
Weight: 290g