SRAM RED AXS E1 – Ultimate Wireless Shifting Precision and Performance

Experience the next generation of electronic shifting with the SRAM RED AXS E1 12-Speed Wireless Rear Derailleur. Engineered for elite road cycling performance, this premium rear derailleur combines lightning-fast wireless shifting, advanced chain management and ultra-lightweight construction to deliver exceptional efficiency, precision and reliability.

At the heart of SRAM's flagship RED AXS drivetrain, the E1 rear derailleur introduces improved efficiency, reduced weight and enhanced versatility. Compatible with cassette ranges from 10–28T to 10–36T, it provides the flexibility required for fast road racing, demanding climbs and challenging mixed-surface routes.

Featuring SRAM's innovative Orbit fluid damping technology, the derailleur maintains consistent chain tension and minimises unwanted chain movement without compromising shifting performance.

Larger X-SYNC pulley wheels improve drivetrain efficiency, while premium ceramic bearings and a lightweight carbon cage contribute to smooth operation and reduced weight.

The updated design is 16 grams lighter than the previous generation, weighing approximately 262 grams, making it an outstanding choice for performance-focused cyclists.

Compatible with both 1x and 2x drivetrains, the SRAM RED AXS E1 delivers exceptional versatility for modern road and all-road bicycles.

Key Features & Benefits

• SRAM AXS Wireless Electronic Shifting – Delivers precise, fast and consistent gear changes without mechanical shift cables.

• Orbit Chain Management Technology – Advanced fluid damping system reduces chain movement, noise and unwanted chain slap on rough surfaces.

• 16 g Lighter Than Previous Generation – Optimised construction reduces weight while maintaining outstanding durability and performance.

• 12-Speed Drivetrain Compatibility – Designed for compatible SRAM AXS 12-speed road drivetrain systems.

• Wide Cassette Compatibility – Supports cassette configurations from 10–28T up to 10–36T for versatile gearing options.

• Compatible with 1x and 2x Drivetrains – Suitable for single-chainring and double-chainring configurations.

• Larger X-SYNC Pulley Wheels – Improved pulley design helps reduce friction and increase drivetrain efficiency.

• Premium Ceramic Pulley Bearings – High-quality bearings support exceptionally smooth pulley rotation and efficient operation.

• Lightweight Carbon Cage – Premium carbon construction reduces weight while providing excellent stiffness.

• Customisable SRAM AXS Technology – Allows wireless pairing, system configuration, firmware updates and personalised shifting settings through the SRAM AXS app.

• Replaceable SRAM AXS Battery – Compatible with SRAM's existing removable and rechargeable AXS batteries.

• Premium Race-Ready Construction – Designed for demanding road racing, endurance cycling and performance-oriented all-road riding.

Engineered for Effortless Shifting

Every gear change matters when riding at the highest level. Whether accelerating out of a corner, attacking a steep climb or maintaining a consistent cadence during a long race, the SRAM RED AXS E1 rear derailleur delivers the precision and responsiveness required for maximum performance.

Its fully wireless electronic shifting system eliminates traditional shift cables, providing a clean bicycle setup and consistent shifting accuracy.

SRAM's Orbit technology uses a fluid damper to control chain movement, keeping the drivetrain quiet and stable even when road surfaces become uneven.

The larger X-SYNC pulley wheels and ceramic bearings contribute to improved drivetrain efficiency, helping riders make the most of every watt.

With compatibility for both 1x and 2x configurations and cassettes up to 36 teeth, the RED AXS E1 offers the versatility needed for competitive road cycling and demanding endurance adventures.

The SRAM AXS ecosystem also allows riders to personalise shifting controls, monitor battery status and keep the system updated through the dedicated mobile application.

SRAM RED AXS E1 – Exceptional wireless shifting precision, lightweight engineering and uncompromising race performance.