SRAM RED E1 Crankset

The SRAM RED E1 Crankset is SRAM’s lightest and most refined road crankset, engineered for maximum power transfer, minimal weight, and precise front shifting performance. Designed for elite-level road racing and high-performance endurance builds, it delivers a highly optimized balance of stiffness, efficiency, and drivetrain smoothness.

Key Features & Benefits

Ultra-Light Hollow Carbon Construction
Refined carbon layup reduces weight while increasing stiffness, making it one of the most efficient cranksets in SRAM’s lineup. The E1 revision further reduces mass compared to prior generation designs.

X-Range 2x Gearing Optimization
Designed around SRAM X-Range chainring combinations (46/33T, 48/35T, 50/37T), it provides tight, efficient cadence progression with minimal front shift disruption.

One-Piece 2x Chainring Interface (Stiffness Upgrade)
Integrated chainring design improves structural rigidity and reduces flex under load, resulting in faster, more direct power transfer during sprints and climbs.

DUB Spindle System for Durability and Compatibility
The SRAM DUB interface simplifies bottom bracket compatibility while improving bearing longevity and drivetrain stiffness consistency across conditions.

Optimized Front Shifting Performance
Tuned for SRAM AXS electronic front derailleurs, delivering crisp, fast, and predictable front shifts under high torque conditions.

Power Meter Upgrade Compatibility
The crankset is designed to accept SRAM’s AXS power meter ecosystem, allowing riders to upgrade to integrated power measurement without changing crank arms.

Expanded Fit Range Including 160mm Option
Now includes shorter crankarm options (down to 160mm), reflecting modern fit trends for improved biomechanics and cadence efficiency.

Technical Specifications

• Drivetrain Compatibility: SRAM AXS 12-speed road
• Configuration: 2x (X-Range system)
• Chainring Options: 46/33T, 48/35T, 50/37T
• Crank Arm Lengths: 160mm to 175mm range
• Chainline: 45mm
• Spindle Interface: SRAM DUB
• Material: Hollow carbon fiber crank arms + aluminum chainrings
• Mount Type: Direct Mount (DM)
• Power Meter Compatibility: Upgradeable (spider-based AXS system)
• Use Case: Road racing, endurance, high-performance all-road builds