BOX One Prime 9 Speed Twin Lever Shifter - Black - Single Shift - 22.2mm Bar Clamp - 9 Speed YGroup_7033428639789 Dial in your stack height

Dial in your stack height with a spacer kit

004 // Barcode 710845770685 - are compatible with:

34mm - 803-00-945

which gives them a smooth and progressive feel

With 6 modes of varying intensity and function

BOX One Prime 9 Speed Twin Lever Shifter - Black - Single Shift - 22.2mm Bar Clamp - 9 Speed YGroup_7033428639789 Dial in your stack heightWith the big brands making a big song and dance about adding an extra gear or an extra tooth to their cassettes, Box is doing things a bit differently with their wide range 9 speed setups. The Box One is the flagship model in the Prime 9 lineup and offers top level performance across 9 gears. You'll have the same range as your mates on their 12 speed setups, but 9 speed so much easier to set up so you'll be able to spend more time riding and less time