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
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I've been out of the weight weenie scene for a while and now it's time to get a new drivetrain on my road bike. Currently I have a Zipp Quad Vuma which is super light and feels stiff, but wonder how the new Dura Ace 9000 compares.
I like all the ring choices on the Dura Ace, I'd love to have 38/5 ... Read More »