e*thirteen Helix Race Alloy Cranks - Bronze gsda Designed to fit both open-end

Designed to fit both open-end grips and lock-on grips

Keep your focus and enjoy comfortably smooth pedaling with the inspiring and intuitive automatic shifting of the SHIMANO CUES RD-U6050 rear derailleur

1 g for 70 and 6

The Chain lock for the simple and at the same time modern look

At Effetto Mariposa we are not obsessed with lightness

e*thirteen Helix Race Alloy Cranks - Bronze gsda Designed to fit both open-ende*thirteen has love for aluminum. Knowing lightweight, confidence inspiring strength, and stunning looks are top priorities for our pros and customers alike, we went after all three with a vengeance. The Helix Race is our top of the line aluminum crankset, with XC weight and EWS worthy Enduro strength. Forged AL6066 T6 crank arms were engineered to maximize stiffness and strength while minimizing excess material. Massive amounts of CNC optimization