The Box Three shifter combines performance and value at an affordable price point. It makes good use of nylon composites in both top and bottom shells as well as the levers. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.

• Prime 9 technology offers the same range as a 12-speed drivetrain, with fewer gears to shift through
• Features a resin top shell and extruded clamp
• Fast action lever
• Single-shift lever is a sound choice for e-bikes