SRAM RED E1 Front Derailleur

The SRAM RED E1 Front Derailleur is SRAM’s most refined 2x front shifting solution, engineered for ultra-fast, silent, and consistently accurate gear changes under load. Designed for the RED AXS E1 platform, it eliminates cable friction entirely and delivers fully wireless precision shifting with near-zero setup complexity.

Key Features & Benefits

Yaw™ Cage Technology for Zero-Rub Performance
The rotating cage aligns dynamically with the chain’s angle across the cassette, eliminating chain rub in all gear combinations while maintaining optimal shifting geometry at every position.

AXS Wireless Electronic Integration
Fully wireless architecture enables clean cockpit design, rapid installation, and full customization through the SRAM AXS app, including shift mapping and system updates.

Auto-Trim Functionality
Automatically micro-adjusts cage position when shifting the rear derailleur, ensuring silent operation without manual trimming across the cassette range.

Refined Cage Shape for Faster Shifts
Updated E1 cage geometry reduces shift time and improves chain engagement, resulting in crisper front shifts under load, especially during sprints and climbs.

Simplified Setup Tool Integration
Includes SRAM’s dedicated setup tool for fast and repeatable installation, minimizing alignment complexity and improving first-time setup accuracy.

X-Range Chainring Optimization
Specifically tuned for SRAM X-Range chainrings, ensuring smooth cadence transitions and optimized front shifting across modern gearing systems.

Technical Specifications

• Drivetrain Compatibility: SRAM AXS 12-speed road
• Configuration: 2x only
• Compatible Chainrings: 46/33T, 48/35T, 50/37T (and select larger road ratios)
• Mount Type: Braze-on (adapter compatible for clamp variants)
• Chainline: 45mm
• Shifting Technology: AXS wireless electronic shifting
• Cage Technology: SRAM Yaw with auto-trim
• Chain Compatibility: SRAM Flattop (D1 / E1)
• Use Case: Road racing, endurance, high-performance all-road builds