E-Thirteen Helix R Crank Arms - 68-73mm and BB86-92 - 30mm - E-Thirteen Direct Mount - 170mm - Black Do Not Ship Internationally Check out the Revive dropper

Check out the Revive dropper from BikeYoke

tested and proven on the World Cup Enduro and DH circuit

Main Fabric: 82% Polyester

Chainline: Dictated by the chainring

E-Thirteen Helix R Crank Arms - 68-73mm and BB86-92 - 30mm - E-Thirteen Direct Mount - 170mm - Black Do Not Ship Internationally Check out the Revive droppere*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