The Propero 4 is built for riders who want real speed without sacrificing comfort. It blends the aerodynamic shaping inspired by the S Works Evade 3 with the cooling feel of the S Works Prevail 3, creating a helmet that stays fast in the wind and comfortable when the pace heats up.

Aero advantage you can feel

Developed with extensive CFD modeling and Win Tunnel testing, the Propero 4 borrows key aero shaping from the Evade 3. The result is a helmet designed to reduce drag and keep you moving efficiently on long solo pulls, group rides, and race days.

Ventilation for hard efforts

Inspired by the Prevail 3, the Propero 4 is tuned to keep air moving across your head. Subtle micro channels help manage airflow through the helmet so you get a steady, refreshing flow of cooling air when the effort ramps up.

Comfort and confidence all day

It is not just fast and cool. The Propero 4 also brings premium safety and fit details into a helmet you will want to wear every ride, including MIPS technology for added confidence and a fit system designed for secure, all day comfort.

Safety standard: For helmets sold in the U.S. and Canada, the Propero 4 complies with the U.S. CPSC Safety Standard for Bicycle Helmets for persons age 5 and older.