To create its distinctive monocoque dome and airfoil arms, manufacturing each VumaChrono requires over 100 steps and takes an experienced worker almost half a day. The breakthrough shape and a massive 30mm aluminum spindle make the VumaChrono by far the stiffest crankset we’ve ever tested while keeping its assembled weight to just 860g including the bottom bracket (172.5mm, 53/39).

Weighing as little as 580 grams, it's the lightest crankset and bottom bracket system ever to pass the rigorous CEN testing protocol for racing bikes. But the true brilliance of the VumaQuad is that Zipp’s engineers were able to achieve that benchmark with a design that’s stiffer than any other crankset we’ve tested, except for our own VumaChrono.

Available in four lengths from 170-180mm with 53/39 or 50/34 chainrings. Replacement chainrings are also available.

Zipp have used ABEC 5 bearing races which run on ceramic bearings to reduce mechanical drag to a minimum.