RockShox Reverb AXS Dropper Post The 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. RockShox 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. Clean, simple and fast to install - Effortless wireless-electronic actuation and infinite height adjustment with a single touch. No hoses to route, no fishing required. A new Reverb, Revamped - Updated internals for faster return speed in all conditions. Features new Vent Valve Technology, a simple and reliable built in service solution without disassembly of the seatpost. AXS™ Technology at hand - 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 OE: AXS™ handlebar controller and battery sold separately AM: Includes AXS™ handlebar controller and battery Shared battery with all other SRAM AXS™ enabled components System is completely water and dust proof to IP69K Specification: Post diameter: 30.9mm, 31.6mm, 34.9mm Travel: 100mm, 125mm, 150mm, 170mm Post length: 340mm, 390mm, 440mm, 480mm Remote: Included