Box One Jockey Wheel Set

Replacement jockey wheels for Box One and an upgrade for Box Two rear derailleur.

Compatible with both Box One and Box Two 11-speed and prime 9 rear derailleurs.

Technology

Prime 9

Prime 9 technology is a counter-intuitive philosophy based on the less is more theory. It embraces range wihtout adding complexity. The outcome is fewer parts, reduced weight, and increased durability.

Is Prime 9 Simpler?

• Same Range With Fewer Gears
• Ease of Set-up
• Wide Compatibility
• Less Maintenance
• Don’t Worry, All Bike Shops Are Familiar With 9 Speed Platforms!

Is Prime 9 More Durable?​

• Straighter Chain-line
• Unique 9-Speed Chain
• Single Shift Option (E-MTB)
• Fewer Gears (fewer shifts)
• ​Full Steel Cassette (all tiers)

Does Prime 9 Perform Better?

• Shifting Less Means Faster Riding
• Optimised Shift Ramps
• Consistent Gear Jumps
• Lightweight Cassette

What's Included?

• 2 x Bolt, Pulley
• 1 x Pulley Assembly, Lower, 13T
• 2 x Spacer, Pulley, 1.5
• 1 x Pulley Assembly, Upper, 11T
• 2 x Spacer, Pulley, 1