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.   Features Effortless Electronic-Wireless actuation and infinite height adjustment with a single touch.. Clean, simple and fast to install. No hoses to route, no fishing required.. Updated internals for faster return speed in all conditions.. Vent Valve Technology, a simple and reliable built in service solution without disassembly of the seatpost.. Sram AXS™ technology, a new level of interaction, personalization, and connectivity across all AXS™ enabled components.. Compatible with 7mm round rails and 7x9mm oval rails..   Specification Travel: 125mm or 150mm. Diameter: 31.6mm. Length: 390mm or 440mm.   Includes Axs dropper post. Does not include AXS battery, charger or remote.