The Cervélo S3 Ultegra Di2 is an aero road bike designed to deliver speed, efficiency, and precision for competitive and performance-focused riders. Built with Cervélo’s aerodynamic carbon frame shaping and internal cable routing, the S3 slices through wind while maintaining a stiff, responsive platform for sprinting and hard efforts. Outfitted with Shimano Ultegra Di2 electronic shifting, it offers smooth, reliable performance and clean, hassle-free operation. With disc brakes for confident stopping power and clearance for up to 28mm tires, the S3 balances race-day aerodynamics with everyday ride comfort and control. It’s a sleek, versatile machine built to go fast.