Our custom guards for cycling offer a thin profile developed specifically for riding. The Journal for Strength and Conditioning recently published a study that showed cyclists who wore a custom mouthguard can improve their performance by increasing their VO2Max. Additionally, those cyclists wearing a mouthguard took a longer time to become winded then their counterparts who did not snap a guard on!
Long and short of it is, if you're riding neck and neck with your buddies and want the advantage, get yourself a custom guard specifically for Cycling. You'll not only gain the advantage but your teeth will be protected when someone in the peloton falls from exhaustion!