Perfect shifting through better design, even through the toughest gravel terrain. By using a Full Mount interface, the Rival XPLR AXS rear derailleur ensures perfect shifting with no adjustment screws, and unmatched resilience to whatever the world throws at you. Mud, loose rocks, or careless airline employees can&';t knock this out of adjustment. Wireless AXS shifting pairs with our smooth and strong chain management for an effortless, set-and-forget ride. Features 1x specific for use with 10-46T XPLR 13-speed cassette and Flattop chains Hangerless Interface and Full Mount attachment allow for the most precise shifting and the ultimate resistance to impact Simple setup with no adjustment screws Superior chain management with MTB-inspired spring clutch Replaceable and rebuildable parts Specifications Speed (RD) 13 Cable pull ratio n/a Cage (RD) n/a Max tooth 46 Color (RD) Black/Grey Pulley bearings material Steel Cage material (RD) Aluminum Drivetrain Configuration 1x Communication Protocol AXS Shift Technology Wireless Chain Technology Road Flattop D1, Road Flattop E1