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Box Two Prime 9 Shifter

Box Two Shifter Closeup

The Box Two shifter is the only shifter on the market (other than our Box One) that comes factory stock with a hinged clamp. Box Two is our performance tier so this shifter still maintains the durable cast aluminum 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). 


  • Our Most Durable Shifter

  • Hinged and Extruded Clamp

  • 2 pc Pull Lever / Up to 3 Gears Per Shift*

  • Die Cast Top Shell

  • Fast Action Release Lever

  • Prime 9 Technology™

  • Multi Shift Option Not Intended for E-Bike Use

  • Single Shift Option Recommended for E-Bike Use


  • Box One Prime 9 11-50T Cassette Black

  • Box Two Prime 9 11-50T Cassette Black

  • Box Three Prime 9 Cassette Black

  • Box One Prime 9 Chain 126L DLC Black

  • 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 Black

  • Box Three Prime 9 X-Wide Rear Derailleur Black


Compatible Shifter Accessories


Box One Shifter

Clamp 31.8mm


Box One Matchmaker

R Shifter Adapter


Box One I-Spec II

R Shifter Adapter


Box One Shiftmix
R Adapter

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