What does the PNW Drop Bar Lever Kit 31.8mm do?

The PNW Components Drop Bar Lever Kit 31.8mm brings clean, reliable dropper post control to your drop-bar bike, so you can get the saddle out of the way on a fast descent without taking a hand off the bars for long. This is the 31.8mm clamp version, which mounts on top of the handlebar for a top-of-bar grip that feels familiar if you come from mountain biking. It works with cable-actuated dropper posts and includes the cable and housing you need to get set up, all backed by PNW's lifetime warranty.

The 31.8mm sits up top, while the 24mm version of this kit mounts down in the curve of the drop for riders who want the lever in the hooks. Pick the size that matches where you want your thumb to land. It is built for drop-bar bikes and is not recommended for flat or mountain handlebars. Best for gravel, cyclocross, and adventure riders running a cable dropper who want a tidy, dependable remote that lives at the top of the bar.