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the Stairmaster returns under the Spring Break umbrella with the same philosophy: keep it light
Offered in a rainbow of solid
Full chromoly frame
built to take on mixed conditions at high speeds
Torque/Cadence
e*thirteen Helix R Crankset - 165mm, 73mm, 30mm Spindle with e*thirteen P3 Connect Interface, Black Mountain Bike Brakes the Stairmaster returns under theThe Helix R is e*thirteen's top of the line aluminum alloy crank. Forged AL 6066 T6 arms deliver Enduro strength in XC weights and it took a 30mm Forged 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 savings for your ride. Designed to be compatible with Shimano and SRAM drivetrains, modern hub spacing, and bottom brackets. Helix R cranks can achieve
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