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: Travel options include 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, 250mm 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, 7x9x and 7x10) SPECS: 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 E-bike Approved Cable length (SP) n/a Power Source AXS Battery Part Weight (g) 543 - 832