The Cervélo S5 Ultegra DI2 is a racing bike designed for high speed, aerodynamic efficiency, and precise handling on the road. The carbon frame offers high stiffness and a sporty geometry that allows for an aggressive, performance-oriented riding position. The bike is equipped with the electronic Shimano Ultegra Di2 12-speed drivetrain, which enables quick and accurate gear shifts. Hydraulic disc brakes provide reliable braking performance under all road conditions. A standout feature is the Cervélo HB19 Carbon One-Piece handlebar-stem cockpit, which combines aerodynamics, control, and efficient power transfer. The new Reserve 57|64 wheels, developed jointly by Reserve and Cervélo, are specifically tuned for the S5. The asymmetrical shape of the rear wheel perfectly matches the seat tube profile, ensuring smooth airflow over the frame and wheel. Compared to the previous 52|63 set, the new wheel is 3 watts faster at the same weight, enhancing acceleration and maintaining speed. Internal cable routing ensures a clean, aerodynamic appearance. Aerodynamic tires and carefully tuned components contribute to stability and control, resulting in even better performance. The S5 Ultegra DI2 is a racing bike optimized for maximum speed, precise handling, and the highest demands.