E-Thirteen Helix R Crank Arms - 165mm - 30mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black YGroup_7033983303725 Shimano and other motors are

Shimano and other motors are not compatible

Padded Chin Strap with D-Ring Closure

DaBomb Chainguides are simple

Application: Its very easy to install

and tube work

E-Thirteen Helix R Crank Arms - 165mm - 30mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black YGroup_7033983303725 Shimano and other motors aree*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