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- AXS handlebar controller sold separately- Shared battery with all other SRAM AXS enabled components- System is completely waterproof to IPX7 rating- Compatible with 7 mm round rails and 7x9 mm oval railsSpecifications:- Post diameter: 31.6 mm- Travel: 170 mm- Post length: 480 mm- Remote: AXS Controller Sold Separately- Connection type: Wireless- Weight: +- 676 g