SRAM RED AXS E1 rear derailleur, the heart of the AXS ecosystem is lighter, more efficient, and more capable than ever. With a range of cassettes from 10-28t. to 10-36t., this wireless marvel is equipped with larger pulleys to increase drivetrain efficiency and an Orbit fluid damper to keep everything in place over rough terrain. A derailleur ready for 1x or 2x, on-road or off-road.

• The Orbit chain management technology keeps the drivetrain quiet and secure.
  
• AXS enabled for easy setup, customization, and reliability.
  
• 16 g lighter than the previous generation.
  
• Compatible with 1x and 2x drivetrains.
  
• Compatible with cassettes from 10-28d to 10-36d.
  
• X-SYNC larger pulleys for greater efficiency.
  
• Compatible with existing AXS batteries.
  
• Weight: 559 g.
  
• Maximum number of teeth: 36.