The cervelo s3 ultegra road bike 2017 returns and is better than ever with a completely redesigned chassis that rolls top notch aero dynamics stiffness and versatility into one to create the ultimate road racing bike the fully carbon frame of the cervelo road bike has received a few key altercations to help drastically improve aero dynamics without sacrificing other aspects of the ride with features such as more robust airfoil sections a rear triangle borrowed from our revolutiona