• 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
• SRAM Model ID: RD-RED-E-D1