Reverb AXS completes the AXS ecosystem by giving the rider customizable controls, easy install, and a shared battery, charger, and controller. Built for GX, X0, and XX riders, Reverb AXS ensures smooth control and reliability for every rider running a 100mm up to a 250mm dropper post, all with improved battery clearance.   Features NEW air-over-air design that is more robust and durable.. ActiveRide provides a compliant platform for technical E-MTB climbs when not in fully extended rigid position. Compatible with all saddle rail types (7x7, 7x9 and 7x10). Supplied with battery and charger.   Specification Post diameter: 30.9mm, 31.6mm, 34.9mm. Travel: 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, 250mm. Remote AXS Controller Sold Separately. Saddle Rail Compatibility Round/Oval (7x9 & 7x10). E-bike Approved. Weight: 712g Weight Based On 200mm 31.6 W/O battery - Battery 25g.