The Rockshox Reverb AXS XPLR Dropper Seatpost is the next gamechanger in the gravel and adventure bike world. Combining their renowned dropper post technology with all-new ActiveRide built-in compliance, the Reverb AXS XPLR is here to make your drop bar bike a whole lot more capable!New 27.2mm Reverb AXS XPLR delivers more control, confidence, and fun for gravelActiveRide provides a smooth ride over rough gravel terrainAXS Technology allows rider customization via the AXS Mobile App and use with AXS handlebar controls (drop or flat bar - not included) Shared battery with all other SRAM AXS enabled components - battery and charger includedSystem is completely waterproof and dustproof to IP69K - take it anywhereThe new Reverb AXS XPLR dropper post delivers more control, confidence, and fun on gravel roads everywhere. Getting the saddle out of the way means more room to move, saving you from awkward manoeuvring and sketchy descents. Rockshox have created an an all-new design platform complete with built-in compliance called ActiveRide. It s like travel for your saddle. The Reverb AXS XPLR uses air only internals to provide a fully rigid top-out position. With a touch of your AXS controller, you ve got built-in compliance to ensure comfort and control over the roughest sections of gravel. Enabled by SRAM AXS technology, Reverb AXS XPLR is part of the ultimate personalized cockpit.