Our intention with Reverb™ AXS® was inventive and pure. No hoses. No routing. No energy wasted. Not a single thing in the way of the experience. We created a reliable wireless-electronic dropper post and controller that actuates with drastically less effort and zero distraction. Expanding what's possible on a bike, Reverb AXS is enabled by SRAM AXS™ technology, a new level of interaction, personalization, and connectivity across all AXS enabled components. FEATURES NEW Features Vent Valve Technology for super simple service if the need arises without any disassembly of the post NEW Lower friction IFP allows for faster actuation of the post and less force needed AXS Technology allowing for customization to an individual rider’s liking via the AXS Mobile App SRAM AXS compatible controller sold separately. Shared battery with all other SRAM AXS enabled components System is completely waterproof to IPX7 rating Compatible with 7mm round rails and 7x9mm oval rails SPECIFICATIONS Post diameter 30.9mm, 31.6mm, 34.9mm Travel 100mm, 125mm, 150mm, 170mm Post length 340mm, 390mm, 440mm, 480mm Remote AXS Controller Sold Separately* Connection type Wireless Colour (Telescoping Seatpost) Black Saddle Rail Compatibility Round/Oval (7x9) E-Bike Approved E-bike Approved w/E-MTB Decal *Suggested remote - EC8397001 - SRAM ELECTRONIC CONTROLLER - SRAM AXS POD ROCKER LEFT (INCLUDES CONTROLLER W DISCRETE CLAMP)