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Aero/TT Helmets
$549.95
This product has multiple variants. The options may be chosen on the product page
Aero/TT Helmets
$549.95
This product has multiple variants. The options may be chosen on the product page
Aero/TT Helmets
$999.95
This product has multiple variants. The options may be chosen on the product page
Shop aero and time trial helmets from Giro for triathlon, time trials and fast solo efforts. Aero helmets smooth the airflow over your head and back to save energy at speed, and both Giro Aerohead models include MIPS.
At a glance
- Giro Aerohead OG MIPS
- Giro Aerohead II MIPS
- Built for triathlon and time trials
- MIPS rotational impact protection
- Sizes S, M and L
How to Choose an Aero Helmet
At speed, most of your effort goes into pushing through the air. An aero helmet smooths the airflow over your head and onto your back, which can save meaningful energy in a time trial or the bike leg of a triathlon.
Short Tail or Long Tail?
Modern aero helmets like the Giro Aerohead have a shorter tail than older time trial helmets. A shorter tail is more forgiving if you move your head or look down, which most cyclists do over a long effort.
Visors and Ventilation
Aero helmets have fewer vents than road helmets, so check how much airflow you need for hot races. A wrap-around visor smooths the airflow further and protects your eyes.
Fit and Head Position
An aero helmet works best when it sits close to your head and lines up with your back in your aero position. Test the fit in your race position, not just standing up.
Aero Helmet Sizing and Fit
Measure around your head about 2cm above your eyebrows and ears, at the widest point, and compare it with the size range on the product page. If you are between sizes, the larger size with the fit system tightened usually works best.
A helmet should sit level on your head, about two finger widths above your eyebrows. The side straps should form a V just below each ear, and the chin strap should be snug enough that only one finger fits underneath. Tighten the rear fit system until the helmet does not rock when you shake your head.
Aero Helmet FAQs
Is an aero helmet worth it for triathlon?
For many triathletes, an aero helmet is one of the most cost-effective ways to save time on the bike leg, as it reduces drag for the whole race.
Can I wear an aero helmet on normal rides?
You can, but aero helmets have less ventilation than road helmets and are designed for an aero position, so most cyclists save them for races and time trials.
Do Giro aero helmets have MIPS?
Yes. Both the Giro Aerohead OG MIPS and Aerohead II MIPS include MIPS rotational impact protection.
Are aero helmets legal in Australia?
Yes. Every helmet we sell meets Australia's mandatory safety standard for bicycle helmets.
Aero Helmet Brands We Stock
We stock aero and time trial helmets from Giro. For training rides, take a look at our road bike helmets.