Working alongside their 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 their top-end carbon and alloy cranks. Helix Race GR cranks easily exceed ASTM 5 standard — a work of art made to take a beating. 55mm Chainline with Helix chainrings (chainring sold separate) 170.5mm Q-Factor Compatible with Helix Race, Helix Plus and Helix Steel chainrings Not compatible with SL or UL Chainrings
