The Cervelo S-Series Disc Ultegra Performance Road Bike is designed to be an aerodynamic integrated system incorporating the rider, frame, and components. Frame tube shapes and design elements work together to manipulate a smooth airflow of the bike and rider resulting in more speed. Stiffness in critical part of the frame is essential for calm and precise handling and pedaling efficiency, but many other aero bikes have suffered from and abundance of stiffness that's made their handling less than ideal. The S-Series layup has been optimized to deliver a high-performance spring but avoided making it so stiff that you feel like you got kicked in the kidneys after a 40-mile ride. The Cervelo S-Series Disc Ultegra Performance Road Bike makes every part of your ride better: the final sprint on your Saturday morning group ride, the long climb, and a solo effort on the edge of town.