Some of the most aerodynamic motorcycle helmets on the current market are AGV Unisex-Adult Full Face, Shoei Neotec II Helmet, Scorpion EXO-CT220 Street Motorcycle Helmet, Scorpion Covert Helmet, LS2 Helmets Rebellion Motorcycle Half Helmet, etc.

However, if you care about every second, I recommend buying the Specialized Evade 3, which is by many considered the most aero road helmet on the market. It’s worn by multiple World Tour teams and World Champions and has been extensively tested in a wind tunnel to provide maximum watt savings.

Designed with input from the professional riders at Trek-Segafredo, the new Ballista MIPS prioritises aerodynamics, and is said to bring a 5.4 watt power saving compared to the previous generation of the helmet, based on an hour’s riding at 45km/h. This is the equivalent of saving 17 seconds on a standard hour test at 300 watts.