E*THIRTEEN HELIX RACE CARBON E*SPEC CRANKS BOSCH CX GEN 4/5 / BROSE S MAG

The Helix Race Carbon e*spec crank arms deliver ultra-light performance engineered for e-bikes. Years of carbon layup refinement create an exceptional stiffness-to-weight ratio, making them ideal for all-mountain riding where every gram counts. Optimized for Bosch CX Gen 4/5 and Brose S Mag systems, these cranks represent e*thirteen's commitment to precision engineering. A premium upgrade for riders seeking to reduce rotating mass without compromising durability or power transfer. Features Ultra light: from 349g High rigidity and robustness thanks to an optimized carbon structure Offset 26mm – ideal for Bosch CX Gen4/SX, Brose S Mag and TQ HPR50 ASTM category 5 certified for use in trail and bike park Compatible with ISIS axis systems Available in various lengths: 160mm–170mm Integrated automatic extractor system for easy maintenance Discreet and quality design in Graphite Specification Material: carbon Axis compatibility: 24mm ISIS Offset: 26mm Engine compatibility: Bosch CX Gen4/SX, Brose S Mag, TQ HPR50 Weight: approx. 349g (in 165mm) Crank Lengths: 160mm, 165mm, 170mm Certification: ASTM Category 5 Colour: black (Graphite) Size 160mm 165mm 170mm Contents 1 pair Crank arms including protective caps, stickers & instructions We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.