S Series

S Series

16 years of aero road bicycle development have made the S-series the benchmark aero road bike. These bicycles are not only faster in the wind tunnel, but proven in the real world, and stiff enough to win professional sprint finishes.

Speed engineered

Cervélo pioneered the aero bike segment. The S-Series is engineered to make you more efficient and comfortable—so you can be faster, whatever your speed. The focus on aerodynamics is visible in every aspect of the design—from the location and shapes of the TrueAeroTM tubes to the water bottle mounts. Once on the bike, its efficiency in transferring all of your power to the road will persuade—or demand—that you push it to road-blurring speeds. This performance does not wear off on climbs, making it an aero bike with the rare gifts of light weight and stiffness, one that climbs well and boosts your confidence descending. But speed also includes comfort—both in the carbon composite layup design and in the power saved through aerodynamics that keeps you comfortably in your zone, rather than off the back.

What goes into aero design?

The S5’s sleek design borrows much from the P-Series, including the extended seat tube cutout. From the dropped down tube to the shielding seat stays, all frame shapes are designed to smooth airflow over the entire bike and rider. Even the bottle cage location has been rethought to make it the fastest frame with one bottle or two. Add BBright™ technology and you get the best of aero engineering with maximum control and stability.

  • S5 3/4 Di2
  • S3 Ultegra Di2 profile stock wheels
  • The New S2 gallery 1
    The New S2
  • S3 gallery 2
Core Design Features

Shielding Seat Stays

Hiding the rear brake from the wind, not from the mechanic. Properly formed seat stays hide the brake and improve air flow over the calliper.

Aero, Simplicity

Dropped Down tube

Positioning the down tube perfectly saves drag on the system by taking into account the interaction between the front wheel and the frame.


Partial Seat Tube Cutout

A close-fitting curve in the seat tube partially hides the rear wheel improving aerodynamics with no weight penalty.

Aero, Weight

Shaped for Bottles

Drinking is something that every rider needs to do. Taking this into account during design results in a faster overall package.


Carbon Dropouts

Tough, compression-molded dropouts save weight with no sacrifice in strength versus traditional metal dropouts.

Simplicity, Weight

Future-Proof Cable Management

Future-Proof Cable Management ensures your frame is compatible with all current and future derailleur and brake systems.

Aero, Simplicity

Extended Seat Tube Cutout

A close-fitting curve in the seat tube trailing edge shields the leading edge and top of the rear wheel significantly improving aerodynamics.


Evolved Steerer Design

Different frame designs call for different steerer dimensions. We use the right dimension in the right application.

Comfort, Stiffness, Weight


BBright increases system stiffness and reduces frame weight while allowing for a large range of crank compatibility in a modern press fit system.

Stiffness, Weight

Reduced-Friction BB Guide

Smooth shifting that is easy to set up is no accident. Designing shifting requires a detailed approach. Small details have a huge impact.


Aero Cable Management

Cable paths are engineered, from the lever to the brake or derailleur, to reduce aerodynamic drag with no sacrifice in performance.

Aero, Simplicity