The Rock Shox Reverb lever is a great mod to anyone using the clunky top of bar lever. It fits in the place where a front shifter would go. So much better ergonomically.
If you have the old top of bar style, go pick this up.
SRAM Says: https://www.sram.com/rockshox/products/reverb-1x-remote
The all-new Reverb remote pairs the superior ergonomics of SRAM’s shifter design with low-lever-force hydraulic actuation to create the world’s best dropper-post remote. Its excellent ergonomics and light touch mean that riders of all ability levels can use their Reverb posts quicker, more easily and more often, for better ride control everywhere on the trail. And the new Reverb 1x Remote’s Bleeding Edge™ fitting ensures that the periodic maintenance needed for optimum performance is about as hassle-free as working the remote itself.