The Specialized Propero 4 MIPS Road Helmet brings together the aerodynamic advantages of the S-Works Evade and the ventilation of the S-Works Prevail helmets. The result? A helmet that's aerodynamic, highly ventilated, lightweight, and, ultimately, fast. Designed with wind tunnel testing and development, it saves the rider 4 watts (15 seconds) over 40km from the S-Works Evade 3 model. Specialized took the ventilation platform built into the Prevail 3 and introduced 2mm micro-channels that create turbulence in the air flowing through the helmet to increase ventilation and, effectively, cool the rider's head with continuous, refreshing air. They went the extra mile and incorporated MIPS technology and the FS3 Fit System, redefining the expectations of a high-performance road helmet.
This product was added to our catalog on March 18, 2024
Helmet Measurements:
| Hat Size | Circumference (in) | Circumference (cm) | |
| S | 6-3/8 - 7" | 20 - 22" | 51 - 56cm |
| M | 6-7/8 - 7-3/8" | 21-3/4 - 23-1/4" | 55 - 59cm |
| L | 7-3/8 - 7-7/8" | 23-1/4 - 24-3/4" | 59 - 63cm |
Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.
