Not all races allow discs. Kona, Cozumel, and others won't let you use a disc. Also, not every pro has a wheel sponsor that has a disc wheel. You race with what they give you if you want to be paid
Make Inside Out Sports your next online tri shop! http://www.insideoutsports.com/
Make Inside Out Sports your next online tri shop! http://www.insideoutsports.com/