Helix Race Alloy Crank Arms

E*thirteen’s Helix Race Crank Arms combine lightweight design, impressive strength, and striking aesthetics. Engineered with XC-level weight and Enduro-worthy durability, these top-tier cranks feature forged AL6066-T6 arms crafted to maximize stiffness and strength while minimizing excess material. Extensive CNC optimization enhances the technical appearance and weight savings, while a 30mm forged AL7050-T7 spindle adds rigidity and reduces overall weight.

The Helix Race Crankset offers versatile compatibility with Boost and SuperBoost chainlines through its flip-flop Helix Race Chainrings, available in a full range of vibrant Helix colors to match with e*thirteen cassettes and components. The Quick Connect interface ensures a creak-free, secure fit, and Helix rings are fully compatible with Shimano and Sram 11 and 12-speed drivetrains, future-proofing your setup. The cranks also feature the latest APS preload adjuster system and custom crank boots to keep them looking new.

E*thirteen Helix R Crank Arm Features

• Spindle is on the non-drive side of the crank for easier chain guide setup and drivetrain maintenance
• Adjustable chainline accommodates non-Boost (142mm), Boost (148mm) and Super Boost (157mm)
• Now includes an 8mm self-extractor, meaning the cranks can be removed with nothing more than an 8mm allen key
• Lightweight aluminum trail crank arms and aluminum spindle w/ Quick Connect lockring and Adaptive Preload Adjuster (APS), compatible with all Quick Connect Guiderings
• Crank arm and chainring/BB removal tool included

E*thirteen Helix R Crank Arm Specs

E*thirteen Helix R Crank Arm Compatibility

• Chainring: Helix R, Plus, and Steel chainrings to achieve a 52mm or 55mm chainline
• Chain: SRAM and Shimano 12-speed, Narrow/Wide
• Bottom Bracket: BSA 68/73mm, BB30, BB92 and PF30