Aero Road

Triathlon & Time Trial

Endurance Road


Classic Road

S3 Engineering

Power. With Precision.

A completely redesigned chassis combines new, more robust airfoil sections with a rear triangle borrowed from our revolutionary Rca road frame. Our Dropped Downtube enhances frame stiffness while the flattened trailing edge makes bottles an integral part of the bike’s airfoil design. Overall improvements focus on all the perks you want in a workhorse of a bike: Future-Proof cables allow for easy set up of internal electronic, mechanical, or hydraulic shifting and braking lines. Increased clearance allows you to choose up to 700x25mm tires.


Incorporating the proven aero features that have made the S Series the pinnacle of aero road bicycle development, the S3 will make it feel like you’re cheating more than just the wind. From the Dropped Downtube to Shielding Seatstays, all frame shapes are designed to smooth airflow over the entire bike and rider as a system. Our Partial Seat-tube Cutout improves airflow around the rear wheel, while allowing for 700x25c tire clearance. 


A reward for every pedal stroke: BBright boosts bottom bracket stiffness by 16% over the previous model, practically handing you a bunch sprint victory. Our Evolved Steerer Design boosts front-end stiffness (+23% from previous S3) for confident, responsive handling.

Ride Quality

We’re more than happy to destroy the myth that aero bikes can’t be forgiving – even after a long day on less-than-perfect tarmac. Borrowing from the Rca’s rear triangle design, thinner seat stays offer class-leading comfort and compliance.