Perfect shifting thanks to improved design, even on the toughest gravel terrain. Using a Full Mount interface, the Rival XPLR AXS rear derailleur ensures perfect shifting without adjustment screws, and unrivalled resistance to whatever the world throws at you. Wireless AXS shifting combines with our smooth, solid chain management for effortless, plug-and-play riding.Details : ETap wireless electronic shifting logic for intuitive shifting, easy setup and reliability 1x specific for use with XPLR 10-46T cassettes. SRAM AXS activated for easy customization. Chain management keeps transmission quiet and secure. Large X-SYNC pulleys for increased durability and efficiency. Compatible with existing eTap batteries. Clevis material: Aluminum. Roller bearing : Steel.Order no: 00.7518.194.000 : Rear Derailleur Rival XPLR eTap AXS E1 13-Speed Max 46T (Battery Not Included)