Zipp Vuma Quad Chainring. Chain rings for the Zipp VumaQuad crank system. These are custom 4 bolt, 110mm BCD rings designed for this crank. The 4th bolt is integrated with the crank arm. The rings use a "NoNuts" system, threading the bolts into the smaller ring for added stiffness.

---

We recommend fresh set of bolts and spacers for proper "thread and tool bite" and torque. Zipp Vuma Quad Chainring Bolt Kit.

Available In:

For Small: 39, 34T

For Big: 53, 50T