Sram AXS enabled for easy personalization Sram AXS enabled for easy personalization Orbit chain management technology keeps drivetrain quiet and secure A single rear derailleur for all gearing combinations, including 1x and 2x Improved motor and signal travel for faster shifting Larger X-Sync pulleys and ceramic bearings for increased durability and efficiency Compatible with existing eTap batteries **BATTERY NOT INCLUDED - BATTERY PART #530147 - SOLD SEPARATELY