Cranksets

Working alongside our World Cup DH and Enduro athletes, e*thirteen engineered the new Helix Race GR Cranks. These Forged AL-6066-T6, CNC-sculpted aluminum cranks are designed for the rigors of downhill, big bike park laps, enduro, and freeride. The Helix Race GR shares the spindle design and low-profile shape with our top-end carbon and alloy cranks, with 83mm and 73mm spindle options. Helix Race GR cranks easily exceed ASTM 5 standard — a work of art made to take a beating. - Exceeds ASTM 5 standards for Downhill, Bike Park, Enduro and Freeride applications - Forged, CNC Machined, AL-6066-T6 arms and 30mm AL 7050-T7 spindle - 73mm and 83mm spindle options for enduro and DH bikes - Available in popular gravity crank arm lengths, 160mm and 165mm - Molded crank boots, protective polymer decals, APS adjuster, and self-extractor system included - 83mm crank requires the Helix GR Chainring. 73mm crank requires a standard Helix chainring.

Helix Race Carbon e*spec Cranks represent the pinnacle of ultralight carbon e-bike crank design, the highest strength-to-weight available, for All-Mountain applications. Through years of development and refinement in carbon layup and molding, we've honed the Helix Race Carbon e*spec cranks to deliver the highest strength-to-weight ratio crankset in the e-MTB world. ASTM 5 approved; light enough for Trail and All-Mountain, strong enough for shuttle days at the bike park, with weights as low as 320g. Shed serious grams, while still getting the strength and stiffness demanded by top pros and discerning enthusiasts alike. Available for a wide range of motors, in progressive arm lengths, with e*thirteen’s trademark attention to detail, Helix Race Carbon e*spec cranks are an awesome upgrade for any weight-conscious e-bike build. Cranks for ISIS Spindle Motor Systems are available in 21.5mm and 26mm offsets to customize fit, Q-factor, and ride feel. 26mm offset cranks are optimized for Bosch® CX Gen4/Gen5 motor frames, but will fit on all ISIS spindle motors. 21.5mm offset cranks are designed for optimal fit with Bosch® SX, Brose® S-Mag, Avinox®, TQ® HPR50 and Specialized® 2.2 & 3.1 motor systems.