I know that the UCI is the governing body in cycling and racing. I've been to their website and have been trying to figure out the legalities of racing on an aero disc. I have a Renn 575 composite rear disc along with Mavic Ksyrium SSC front wheel. These are mounted on a road bike, not tt bike, along with clip-on aerobars. My understanding of my configuration is that it would only be UCI legal during time trials and triathalons, and not during a regular road race. Is there anyone out there that can correct me or clarify for me what the exact rules are? I was hoping to take it to a local road race.