The GX AXS upgrade kit is your entry point into wireless drivetrain simplicityCompatible with all Eagle Ecosystem cranks and cassettes the upgrade kit allows you to experience AXS without needing to buy an entire groupset when currently running an Eagle mechanical drivetrain Kit includes rear derailleur with battery, charger and cord, shifter with discreet clamp and chain gap toolPod ShifterBlackUPC/EAN/GTIN: 710845914072