The Specialized Propero 4 brings top-tier road cycling performance straight to your ride. Every part of this helmet was designed around one simple formula: aerodynamics plus ventilation plus lightness equals speed. Specialized has long been a leader in cycling innovation, and the Propero 4 carries S-Works grade features into a more accessible package.
The front profile borrows its shape directly from the S-Works Evade 3, refined through extensive testing with computational fluid dynamics and Specialized's own Win Tunnel facility. That aerodynamic shape shaves off four watts, translating to a 15 second advantage over a 40 kilometer ride compared to the S-Works Prevail 3.
Ventilation takes its cue from the Prevail 3's rear design, pushed further with newly developed micro-channeling technology. Tiny grooves, offset by two millimeters, disrupt the airflow inside the helmet so fresh air keeps moving continuously over your head.
Safety and comfort keep pace with the speed focus. The Propero 4 earned the top five-star rating in Virginia Tech's helmet safety testing. It also includes MIPS technology for added protection in a crash, along with an adjustable fit system designed to stay comfortable ride after ride.
This item is brand new.
The Specialized Propero 4 helmet combines the aerodynamics of the S-Works Evade 3 with the ventilation of the S-Works Prevail 3. It earned a five-star rating in Virginia Tech’s helmet safety evaluations.
Its aerodynamic front profile reduces drag by 4 watts compared with the S-Works Prevail 3, equivalent to a 15-second saving over 40 km. Rear-inspired Prevail 3 ventilation and 2 mm-offset microchanneling help direct fresh air over the head. Features include MIPS technology for added crash protection and a fit system designed for lasting comfort.
