The SRAM X01 Eagle AXS Upgrade kit provides electronic shifting for your Eagle drivetrain. It includes a rear derailleur with battery, controller with clamp, and charger and cord. The Eagle AXS controller can be customized through the AXS App to suit your preferences. The derailleur provides instantaneous shifting even under heavy loads, and features a shorter cage for more ground clearance and chain wrap on the cassette. It is compatible with 10-52t Eagle cassettes.