E-Thirteen Helix R Crank Arms - 175mm - 30mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black Ignore Wholesale Tier 2 Brand Rule It's frustrating right

It's frustrating right

SRAM Compatibility:

The front and rear-specific inner rim widths are optimised to run wider tyres up front and narrower tyres in the rear

This solution controls the pressure distribution on the upper arch of the foot to avoid unnecessary pinch points and hot spots while riding

a universally compatible head

E-Thirteen Helix R Crank Arms - 175mm - 30mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black Ignore Wholesale Tier 2 Brand Rule It's frustrating righte*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