Box Two Prime 9 Single-Shift 9-Speed Shifter

The Box Two shifter is the only shifter on the market (other than Box's Box One) that comes factory stock with a hinged clamp. Box Two is Box's performance tier so this shifter still maintains the durable cast aluminium top shell but trades out the Box One's 1-piece pull-lever for a 2-Piece resin and steel variant.

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 most durable shifter
• Lightweight hinged & extruded clamp
• Responsive 2 piece pull lever
• MTB style release lever (V2)

Specification

• Process / Materials:
• Top Shell: Die Cast / Aluminium
• Bottom Shell: Injection Molded / Glass Fiber-Nylon Composite
• Pull Lever: Injection Molded / Glass Fiber-Nylon Composite
• Speed: 9
• Cable: Box One Slick Coated
• Compatibility:
• Platform: E-Bike
• Derailleur:
• Box One Prime 9
• Box Two Prime 9
• Box Three Prime 9
• Weight: 135g

Compatibility

• Box One Prime 9 11-50t Cassette
• Box Two Prime 9 11-50t Cassette
• Box Three Prime 9 Cassette
• Box One Prime 9 126 Link Chain 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