The SRAM RED AXS E1 Rear Derailleur 12-Speed is a premium wireless road and all-road rear derailleur designed for fast, accurate shifting, improved drivetrain efficiency and lightweight performance. As the heart of the SRAM AXS ecosystem, this high-end rear mech is built for riders who want precise electronic shifting across road racing, endurance riding, gravel, fast training and mixed-surface cycling.
- Premium SRAM RED AXS E1 12-speed rear derailleur
- Wireless electronic shifting for road, all-road and gravel riding
- Compatible with both 1x and 2x drivetrains
- Works with SRAM AXS cassettes from 10-28T to 10-36T
- Maximum sprocket capacity of 36T
- Orbit chain management technology keeps the drivetrain quiet and secure
- Larger X-SYNC pulleys for increased drivetrain efficiency
- AXS enabled for easy setup, personalisation and reliable performance
- 16g lighter than the previous generation
- Ceramic pulley bearings for smooth, efficient running
- Lightweight carbon cage
- Compatible with existing SRAM AXS batteries
- Battery not included
Lighter, more efficient and more capable than the previous generation, the SRAM RED AXS E1 rear derailleur is compatible with both 1x and 2x drivetrains, making it a versatile choice for a wide range of modern road bike setups. It works with SRAM AXS 12-speed cassettes from 10-28T up to 10-36T, giving riders the flexibility to choose close-ratio race gearing or wider-range climbing options.
SRAM’s Orbit chain management technology uses a fluid damper to help keep the drivetrain quiet, secure and controlled when riding over rough roads, gravel or broken surfaces. Larger X-SYNC pulleys improve drivetrain efficiency, while premium ceramic pulley bearings and a lightweight carbon cage deliver smooth running and low weight.
AXS wireless technology makes setup, pairing and personalisation simple, with reliable electronic shifting and compatibility with existing SRAM AXS batteries. Weighing just 262g, the SRAM RED AXS E1 12-speed rear derailleur is a race-ready upgrade for riders looking for elite shifting performance and modern drivetrain control.
Please note: Battery is not included.