E-Thirteen Helix R Crank Arms - 175mm - 30mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black Needs Images Quicker lever access and light

Quicker lever access and light operation force maintains rider concentration

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Available in 29er and 27

2G has 12 splines that are approximately 23

Stack height: An ultra-low 34mm

E-Thirteen Helix R Crank Arms - 175mm - 30mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black Needs Images Quicker lever access and lighte*thirteen has lots of love for aluminium. Knowing weight, strength and looks were top priorities for riders, they went after all three with a vengeance. The Helix R is their top of the line aluminium alloy crank. Forged AL 6066 T6 arms deliver Enduro strength in XC weights and it took a 30mm Forged AL 7050 T7 spindle and massive amounts of CNC work to get there. CNC detail can be seen all over every surface for the ultimate in tech bling and weight