
WorldTour aero race bike with Ultegra Di2 and Reserve carbon wheels.
The Cervélo S5 Ultegra Di2 is engineered for riders who demand the fastest, most efficient aero road platform available. The carbon Bayonet S5 fork and V-stem cockpit form the foundation of Cervélo’s aerodynamic leadership, refined with a deeper head tube and fork legs. Reserve 57/64 Turbulent Aero wheels are specifically matched to the S5’s asymmetric seat tube to maintain smooth airflow and stability even in crosswinds. Shimano Ultegra Di2 12-speed electronic shifting delivers race-proven precision, while the integrated 4iiii dual-sided power meter provides real-time training data. The HB19 one-piece carbon handlebar features Cervélo’s Plus-Four concept, narrowing the hood position for aerodynamics while maintaining control in the drops.