ActiveRide - Air only internals provide a fully rigid extended position with built-in compliance in the middle to ensure comfort and control over the roughest sections of gravel Drop force is tunable based on rider weight Saddle clamps compatible with 7x10, 7x9 Oval carbon and 7mm round rails AXS Technology allowing for customization to an individual rider’s liking via the AXS Mobile App AXS handlebar controls (drop or flat bar) sold separately Shared battery with all other SRAM AXS enabled components Battery and charger included. System is completely water and dust proof to IP69K SRAM Model ID: SP-RVB-XPLR-A1