The well known- reliable and affordable Eagle GX ecosystem is now available with AXS. New for 2021 the GX AXS upgrade kit is your entry into the simple life of a wireless drivetrain. Compatible with SRAM's Eagle ecosystem cassettes and crankarms the upgrade kit allows you to experience AXS without needing to buy an entire groupset - provided you're already using Eagle Products. 

Kit includes - Rear Derailleur and Battery, Controller/Shifter with Clamp, Charger with cable and Chain Gap Tool.