The Eagle AXS derailleur is the heart of the drivetrain. Offering total control and confident shifting, this proven wireless system brings the expertise of a world champion to any bike. AXS connectivity makes wireless setup easy, as well as customization and integration with any other AXS component. The Eagle AXS derailleur is smart enough to protect itself thanks to its incredibly durable overload clutch. In the event of an impact, the motor's gearbox disengages, allowing the derailleur to move freely, then instantly returns to its position for a seamless experience for the rider. The system is water- and dust-resistant, providing total confidence when crossing streams, dealing with mud splashes, and washing down after a ride. Designed to meet the varied preferences of cyclists, it is compatible with 10-52T and 10-50T Eagle cassettes.Product highlights: Simple, wireless shifting (128-bit encoding). Quiet, secure, and smooth shifting, regardless of terrain. Customize and control the system via the app to suit your needs. Impact protection: the system features an overload clutch that disengages upon impact and returns to the desired position.Details: Compatible with 1x12-speed drivetrains. Compatible with 10-50 and 10-52-tooth cassettes Equipped with a Type 3 cage-style shock absorber for secure chain retention and smooth descent. Robust aluminum cage. Compatible with the Eagle drivetrain ecosystem AXS-compatible for easy wireless setup, optimal customization, increased reliability, and compatibility with all SRAM AXS MTB components. Over Clutch protection against impacts. Ships without battery or charger.Part Number: 00.7518.207.000: S500 Eagle AXS 12-speed Rear Derailleur (Battery Not Included)