Fogging of the visor is a major issue in full-face motorcycle helmets because it reduces visibility and can cause accidents. “How do I know if my new motorcycle helmet has an anti-fog system?” asked one of leatherup.com customers. This made us wonder what motorcycle helmets can be considered and advertised as anti-fog.
What Helmet Manufacturers Do to Prevent Fogging of the Visor
Let’s first look at what motorcycle helmet manufacturers offer against fogging of the visor.
Factory-Coated Anti-fog Layer on Visors
Standard motorcycle helmet visors come with an anti-fog coating. Though they provide some protection against fogging, factory-coated, standard visors cannot substitute pin lock visor inserts or ventilation systems in full-face motorcycle helmets.
Pin Lock Anti-Fog Visor Inserts
A pin lock anti-fog insert is a piece of moisture-absorbing plastic that attaches to the visor using two pins. Many motorcycle helmet manufacturers make their helmets pin lock-insert ready. In the insert-ready Shoei helmet replacement shield below, the smaller darker panel is an anti-fog insert that is sold separately.
A Motorcycle-Helmet Ventilation System as an Anti-Fog Feature
Motorcycle-helmet ventilation systems are rarely advertised as anti-fog because they serve more than one purpose. Quality full-face helmets have a snug, close fit—which is good for safety and wind noise. But snug fit causes fogging and heat discomfort. That’s why vents are a common feature of full-face helmets.
A typical full-face helmet ventilation system consists of a chin-bar vent and a pair of vents on top and back of the helmet. A ventilation system can be as simple as a pair of vents on top of the motorcycle helmet. Chin-bar vents are sometimes called breath guards or breath deflectors.
The Hawk motorcycle helmet below, features a chin-bar vent, a pair of top vents, and a pair of back vents.
What Motorcycle Helmets Can Be Considered Anti-Fog?
To be considered anti-fog, a factory condition motorcycle helmet must have any of the following accessories: a pin lock anti-fog visor insert or a ventilation system.
A standard visor treated with anti-fog agents doesn’t make a motorcycle helmet fog-proof.