SRAM RED AXS E1 Rear Derailleur

The heart of the AXS ecosystem—lighter, faster, and more efficient. The RED AXS E1 rear derailleur delivers precise wireless shifting for road and all-road riding, supporting both 1x and 2x drivetrains with cassette ranges from 10–28T to 10–36T. Larger ceramic-bearing pulleys improve efficiency, while Orbit fluid damping keeps the drivetrain quiet and stable on rough roads.

Key Features

12-speed wireless AXS shifting

Compatible with 1x and 2x drivetrains

Supports cassettes from 10–28T to 10–36T

Orbit chain management for quiet, secure performance

Larger X-SYNC pulleys with ceramic bearings for higher efficiency

16 g lighter than previous generation

Uses existing AXS batteries

Specifications

Speed: 12-speed

Max cassette size: 36T

Cage material: Carbon

Pulley bearing material: Ceramic

Color: Black

Weight: 262 g