Box Components

Two Prime 9 Rear Shifter Multi Shift

What Our Gearhead® Experts Are Saying:

"I’ve used the Box Two Prime 9 on everything from bikepacking rigs to trail setups, and it just works. The multi-shift option lets me drop gears fast on punchy climbs, and I don’t stress about dialed indexing like with other drivetrains. It’s intuitive, light, and feels solid with or without gloves."

The Box Two Prime 9 Shifter is engineered for riders who want a more straightforward, durable drivetrain solution that still delivers performance. With a cast aluminum top shell and a composite pull lever, it’s built to take trail abuse while delivering consistent, tactile shifts. We especially love the hinged clamp—it makes installation a breeze and allows for a clean cockpit setup.

Available in both single-shift and multi-shift configurations, this shifter suits a wide range of riding—from e-MTB to gravel. The simplified 9-speed setup reduces the number of shifts per ride while improving chainline and gear spacing. Combine it with a Prime 9 derailleur and cassette, and you’ve got a lightweight, low-maintenance drivetrain with trail-tested performance.