*BATTERY NOT INCLUDED*The heart of the connected cadre. The SRAM RED eTap AXS rear derailleur is AXS enabled for easy personalization and designed for both 1x and 2x systems. Advanced chain management keeps it silent and secure no matter the terrain. The derailleur also comes with faster pulleys, bearings, motors and signals, improving speed in every way.FEATURES:SRAM AXS enabled for easy personalizationOrbit chain management technology keeps drivetrain quiet and secureA single rear derailleur for all gearing combinations, including 1x and 2xImproved motor and signal travel for faster shiftingLarger X-SYNC pulleys and ceramic bearings for increased durability and efficiencyCompatible with existing eTap® batteries*BATTERY NOT INCLUDED*