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.

Features
Exceeds ASTM 5 standards for Downhill, Bike Park, Enduro and Freeride applications.
Forged, CNC-machined AL-6066-T6 arms paired with a 30mm AL 7050-T7 spindle.
Available in 73mm and 83mm spindle options for enduro and DH bikes.
Offered in popular gravity crank arm lengths: 160mm and 165mm.
Includes molded crank boots, protective polymer decals, APS adjuster and self-extractor system.
83mm crank requires the Helix GR chainring; 73mm crank requires a standard Helix chainring.

Specifications
Exceeds ASTM 5 standards for Downhill, Bike Park, Enduro and Freeride applications.
Forged, CNC-machined AL-6066-T6 arms paired with a 30mm AL 7050-T7 spindle.
Available in 73mm and 83mm spindle options for enduro and DH bikes.
Offered in popular gravity crank arm lengths: 160mm and 165mm.
Includes molded crank boots, protective polymer decals, APS adjuster and self-extractor system.
83mm crank requires the Helix GR chainring; 73mm crank requires a standard Helix chainring.

Mfr Claimed Weight 
83mm x 160mm: 590g
83mm x 165mm: 607g
73mm x 160mm: 584g
73mm x 165mm: 599g