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