SRAM RED AXS E1 Rear Derailleur – 12-Speed
Ultra-lightweight wireless shifting with enhanced drivetrain efficiency and secure chain management.
What Is It?
The SRAM RED AXS E1 Rear Derailleur is a premium electronic rear derailleur designed for SRAM's 12-speed road AXS drivetrain systems. It combines wireless shifting, lightweight carbon construction and ceramic-bearing pulley wheels to deliver precise gear changes and efficient drivetrain performance. Its Orbit fluid damper helps control chain movement over rough roads, while compatibility with both 1x and 2x setups offers versatile drivetrain configuration.
Key Features
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Wireless AXS shifting – Delivers precise electronic gear changes without a traditional shift cable.
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12-speed compatibility – Designed for SRAM RED AXS 12-speed road drivetrains.
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1x and 2x compatibility – Supports single- and double-chainring configurations.
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Orbit chain management – Helps keep the chain controlled and the drivetrain quiet over rough surfaces.
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Carbon fibre cage – Reduces weight while providing a performance-focused construction.
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Ceramic-bearing pulley wheels – Designed to reduce friction and improve drivetrain efficiency.
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Larger X-SYNC pulleys – Optimised for efficient chain movement.
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AXS customisation – Supports setup and personalisation through the SRAM AXS app.
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Existing AXS battery compatibility – Works with compatible SRAM AXS derailleur batteries.
Specifications
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Specification
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Details
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Brand
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SRAM
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Groupset
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RED AXS E1
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Product type
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Rear derailleur
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Model ID
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RD-RED-E-E1
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Speed
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12-speed
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Shifting system
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Wireless electronic AXS
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Drivetrain configuration
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1x or 2x
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Maximum cassette sprocket
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36T
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Compatible cassette range
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10–28T to 10–36T
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Cage material
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Carbon
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Pulley bearings
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Ceramic
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Chain compatibility
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SRAM Road Flattop D1/E1
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Colour
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Black
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Weight
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Approx. 262g
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Manufacturer part number
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00.7518.184.000
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Battery
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Compatible AXS battery; check whether included
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Specifications are based on SRAM's product information.
Benefits
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Provides fast, accurate wireless gear changes.
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Reduces chain movement and noise on uneven roads.
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Supports efficient pedalling through low-friction pulley bearings.
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Keeps weight low for performance-focused road builds.
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Offers flexible configuration for compatible 1x and 2x drivetrains.
Best Suited For
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Road cyclists upgrading to SRAM RED AXS E1.
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Performance road bikes with 12-speed electronic shifting.
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Riders building lightweight, premium road bicycles.
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Compatible 1x or 2x SRAM AXS drivetrain setups.
