Box Three Prime 9 Single-Shift 9-Speed Shifter

The Box Three shifter makes good use of nylon composites in both top and bottom shells as well as the levers.

Box Three is Box's performance and value tier. So this shifter sheds all the fancy trappings of the top 2 tiers but maintains their shifting characteristics.

All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.

Available as a multi-shift (pull several gears at once) or single-shift shifter (a sound choice for E-Bikes).

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

Features

• Box Components's best all-rounder shifter
• Lightweight extruded clamp
• Responsive 2 piece pull lever
• MTB style release lever (V2)

Specification

• Process / Materials:
• Top Shell: Injection Molded / Glass Fiber-Nylon Composite
• Bottom Shell: Injection Molded / Glass Fiber-Nylon Composite
• Pull Lever: Injection Molded / Glass Fiber-Nylon Composite
• Speed: 9
• Cable: Stainless Steel Braided
• Compatibility:
• Platform: E-Bike
• Derailleur:
• Box One Prime 9
• Box Two Prime 9
• Box Three Prime 9
• Weight: 128g

Compatibility

• Box One Prime 9 11-50T Cassette
• Box Two Prime 9 11-50T Cassette
• Box Three Prime 9 Cassette
• Box One Prime 9 Chain 126L DLC
• Box Two Prime 9 126 Link Chain Nickel
• Box Three Prime 9 126 Link Chain Polished
• Box One Prime 9 Rear Derailleur
• Box Two Prime 9 X-Wide Rear Derailleur
• Box Three Prime 9 X-Wide Rear Derailleur