Cervelo

S5 Red AXS Road Bike

What Our Gearhead® Experts Are Saying:

"The S5 Red AXS stands out for its deep aero tube shapes, asymmetric wheel integration, and the latest SRAM Red AXS E1 wireless group. The Reserve 57/64 wheels are specifically tuned for the S5’s airflow, and the HB19 bar is both UCI-legal and incredibly ergonomic. This is the bike for riders who want every possible advantage in a sprint or solo break."

Cervélo’s S5 Red AXS is engineered for riders who demand the absolute pinnacle of aerodynamic efficiency and race-day performance. The all-carbon S5 frame features an evolved bayonet fork and V-stem, both deeper and more integrated than ever, resulting in a 6.3-watt aero gain over the previous generation. The front end’s increased surface area is offset by optimized carbon layups, making the entire system 124 grams lighter without compromising stiffness or ride quality. The HB19 “Plus-Four” cockpit narrows the hoods by 4cm versus the drops, allowing racers to maintain a low, aero position while maximizing control during sprints and descents. All cockpit sizes are UCI-legal, ensuring compliance at any level of competition.

The Reserve 57/64 Turbulent Aero wheelset, co-developed with Cervélo, is a standout feature—its offset design perfectly matches the S5’s asymmetric seat tube, smoothing airflow and providing remarkable stability in gusty conditions. These wheels are not only 3 watts faster than their predecessors but also maintain the same weight, giving a tangible edge in both speed and handling. The SRAM Red AXS E1 drivetrain delivers flawless, wireless shifting and pairs with a DUB Ceramic bottom bracket for ultimate drivetrain efficiency. SRAM Paceline X rotors and the fi’zi:k Antares Versus EVO 00 Adaptive saddle round out a build that’s ready for the demands of WorldTour racing.

Every detail of the S5 Red AXS is optimized for speed, from the integrated computer and accessory mounts to the Vittoria Corsa Pro TLR G2.0 29c tires that balance low rolling resistance with confident grip. Available in a wide range of sizes, the S5 Red AXS is built for those who refuse to compromise—whether you’re launching a solo attack, contesting a field sprint, or pushing the pace on your local circuit, this bike is engineered to keep you at the front.

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.