The Specialized Propero 4 helmet combines the aerodynamic advantages of the S-Works Evade 3 with the ventilation of the S-Works Prevail 3, offering comfort and confidence.
Every detail of the Propero 4 was created with the equation for speed in mind: Aerodynamics + Ventilation + Lightweight = Fast. With extensive testing in CFD and in the Win Tunnel, aerodynamics were at the forefront of the Propero 4 development. The aerodynamic leading edge from the S-Works Evade 3 was incorporated directly into the Propero 4, which helped it to be four watts, or 15 seconds over 40km, faster than the S-Works Prevail 3.
Drawing inspiration from the S-Works Prevail 3, ventilation became a focal point for a well-balanced, aerodynamic, and ventilated helmet. The rear-end design language of the S-Works Prevail 3 was incorporated, and small 2mm offset micro-channels were introduced. These channels create turbulence in the airflow throughout the helmet to help create a continuous, refreshing flow of air.
Beyond just aerodynamics and ventilation, the Propero 4 represents meticulous attention to detail. Cutting-edge technologies from S-Works level helmets were incorporated, such as MIPS technology for confidence, and a fit system designed to deliver all-day comfort.
Features:
- MIPS Evolve Solution is a low-friction layer that allows a sliding motion of 10 to 15mm in all directions. Studies indicate that this reduces some of the rotational forces transmitted to the brain during angled impacts.
- FS3 Fit System and Occipital Base Adjustment optimizes comfort by personalizing fit to individual head shape, and helmet angle can be adjusted for compatibility with glasses.
- Adjustable Tri-Fix web splitter combined with thin 10mm webbing for increased comfort.
- Dedicated sunglass storage maintains a secure fit and keeps eyewear out of the way when needed.
- Micro Channeling and large rear-end vents for increased ventilation.
- S-Works Evade 3 front-end design language for enhanced aerodynamics.
- Precision, full-wrap polycarbonate shell for increased durability and premium finish.