Cervelo

S5 Ultegra Di2 Road Bike

What Our Gearhead® Experts Are Saying:

"The S5 Ultegra Di2 is a masterclass in aero engineering. Cervélo’s V-stem and deep head tube create a low-drag front end, while the Reserve 57/64 wheels and asymmetric frame profile keep airflow smooth and stable. The Ultegra Di2 groupset is proven at the highest levels, and the 4iiii power meter brings pro-level data to every ride. This is the bike for riders who want every possible advantage."

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, now even further refined with a deeper head tube and fork legs. The new Reserve 57/64 Turbulent Aero wheels, developed in partnership with Reserve, are specifically matched to the S5’s asymmetric seat tube, ensuring seamless airflow and remarkable stability—even in turbulent crosswinds. The Shimano Ultegra Di2 12-speed electronic drivetrain offers race-proven precision and reliability, while the integrated 4iiii dual-sided power meter delivers accurate, real-time performance data for training and racing. The S5’s HB19 one-piece carbon handlebar uses Cervélo’s “Plus-Four” concept, narrowing the hoods for a more aerodynamic position while maintaining stability in the drops. With clearance for up to 34mm tires, the S5 is as versatile as it is fast, ready for everything from pro-level sprints to challenging gran fondos.

Heads up - We do our best to keep bike specs and images current, but occasional component changes can happen without warning-and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearheads are always here to help.