RockShocx Reverb AXS Controller is efficiency to the max. It's a reliable wireless-electronic dropper post and controller. It is totally enabled by SRAM AXS technology and works with close to no effort. There's no external routing and a quick installation and pairing. Engagement happens with the touch of the paddle, another press sends it up and a second sends it down, saving you time and energy so you can keep your mind where it matters: On the trail.