Helix Race Alloy GR Cranks 160x73mm The e*thirteen Helix Race Alloy GR Cranks deliver world-class gravity performance, easily exceeding stringent ASTM 5 standards for Downhill, Enduro, and Freeride abuse. Forged and CNC-machined from robust 6066-T6 aluminum, these 160mm crank arms are paired with a high-strength 30mm AL 7050-T7 spindle featuring the proven P3 Connect polygon interface. Built for standard 68/73mm bottom bracket shells, this 584g sterling silver crankset comes fully loaded with an Adaptive Preload System (APS) adjuster, dual crank boots, a self-extractor system, and protective decals
e*thirteen Helix Race Alloy GR Cranks - 160mm Length, 73mm Spindle, Sterling Silver
Engineered in direct collaboration with World Cup Downhill and Enduro athletes, the e*thirteen Helix Race Alloy GR Cranks represent a heavy-duty masterclass in aluminum drivetrain design. Purpose-built to endure the absolute brutal forces of big bike park laps, technical freeride lines, and high-velocity enduro racing, these cranks easily exceed ASTM 5 gravity standards. Blending a striking aesthetic with relentless structural integrity, the Helix Race GR is a work of art that is meticulously optimized to take a severe beating on the trail while maintaining elite-level performance.
The arms are expertly forged from premium AL-6066-T6 aluminum and undergo precise CNC-sculpting to eliminate unneeded weight while maximizing lateral stiffness under high torque loads. This model features a 73mm spindle width, making it fully compatible with all mountain bike frames utilizing a standard 68/73mm threaded or press-fit bottom bracket shell layout. The core of the crankset revolves around an oversized 30mm AL 7050-T7 aluminum spindle that utilizes e*thirteen’s proven P3 Connect polygon interface, maximizing surface contact to eliminate interface play and ensure flawless, creak-free power transfer when stomping on the pedals.
At an optimized, short 160mm length, these crank arms provide vital ground clearance on modern, low bottom-bracket frame geometries. Shorter crank lengths drastically reduce the risk of high-speed pedal strikes through technical rock gardens and compressed g-out corners, giving you the confidence to carry momentum without holding back. For precise bearing setup and easy, tool-free maintenance, the crankset features e*thirteen’s Adaptive Preload System (APS) adjuster to quickly dial out lateral play, alongside an integrated alloy self-extractor bolt setup that makes routine workshop servicing highly efficient.
Weighing in at a highly competitive 584g, this premium component is finished in a brilliant, raw Sterling Silver anodizing that resists shoe rub and trail wear. e*thirteen packs the Helix Race GR with exceptional attention to detail, including custom-fitted molded polymer crank boots for direct rock strike defense and high-durability polymer decals to shield the arm faces from scratches. Designed for riders who demand ultimate strength-to-weight optimization on aggressive gravity builds, this crankset is backed by a dependable 5-year manufacturer warranty.
Chainring Compatibility Note: This 73mm spindle configuration is designed to achieve a modern 55mm chainline. It requires a standard e*thirteen Helix direct-mount chainring (Helix Race, Helix Plus, or Helix Steel DM variants). It is explicitly not compatible with Helix SL or UL chainrings.
An elite, athlete-refined 160mm alloy gravity crankset combining ASTM 5 huckproof strength, a 30mm polygon spindle, and a stunning sterling silver finish for riders who demand ultimate durability on the world's roughest tracks.
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