As coach and sports scientist Garth Fox explains, if you’re a time triallist, your number one enemy is aerodynamic drag. It is always present and will always be working against your attempts to go quicker.
Your bike accounts for around 20 percent of the aerodynamic drag that you encounter, the rest is down to your shape and your frontal area – the part that hits the wind.
To a certain extent, Fox says, this means you can buy ‘free speed’. Things like aero bars, aero helmets and tight clothing all contribute to better streamlining. They optimise air displacement and minimise the low pressure area formed in your wake, resulting in less drag.
An aero helmet can be a cost-effective upgrade compared to, say, an aero-tubed frame. And as there’s often little to choose between aero helmets in terms of aerodynamics, it can easily come down to what’s comfortable.
The helmets below have all been rated with four or more stars in Triathlon Plus magazine over the last few years, and cover a wide range of price points. Read on to find out which will work best for you.
Read on for the list. Most available to order.
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