• Fits all 11-speed SRAM road cassettes up to 11-32t
• 2x and 1x compatible
• Updated version of the original SRAM RED eTap rear derailleur
• Orbit chain management technology keeps drivetrain quiet and secure
• 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-A2