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Description

Attack and stay away.

When you're pushing the limits of your wattage capabilities, every bit of savings counts. To this end, Giro took a hard look at the aerodynamic-savings appropriated time-trial helmets and realized that the traditional road helmet may benefit from a change in design. The Giro Air Attack helmet may seem like an odd, round bowl, awkwardly out of place in the professional road peloton, but it mates the wind-cheating design of a time-trial helmet with the comfort and ventilation of a traditional road cycling helmet.

The tear-drop shape is the standard, optimal design for aerodynamic helmets. However along with the design come two issues. First, time trial helmets are not USACycling or UCI legal in mass-start races. Second, they are designed for extended wear and therefore are neither well-ventilated nor comfortable.

Giro's engineers began by looking to the Selector time trila helmet for inspiration. The frontal area is similar, while the back tail has been removed. And although the amputation of the tail seems like the last thing you'd want to do, wind tunnel testing proved that the shape of the front and sides ensures that the air still 'thinks' it's moving around a long tail. In addition to now having roughly the same minimal drag (only 11% more) than the Selector, the Air Attack provides a drastic increase in weight savings by close to 166grams over the Selector.

The ventilation of the Air Attack was studied extensively using a head-form that Giro's engineers call "Therminator." This form is heated to the temperature of a human being while thermo-couples on the exterior relay information that assists designers in mapping out different zones where the head stays cool and warms up while in the wind tunnel. Giro was able to thereby remove unnecessary vents. To ensure that your head remains cool, Giro developed the Air Attack's new fit system, known as Super Fit. This was the response to the discovery of a high pressure zone at riders' foreheads. This system suspends the rider's head off of the EPS, allowing air entered in that front three millimeter portion of the helmet to flow over the top of the head and out the large, strategically placed back channels. Remember that 11% additional drag over the Selector? The 28% increased cooling power achieved ought to make up for it.

The Giro Air Attack Helmet is available in the sizes Small, Medium, and Large and in the colors Black/silver, Black/red, Blue/black, Matte Black, Matte Titanium, and White/silver.

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Giro Air Attack Helmet

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Here's what others have to say...

i have the visor from my previous helmet....

Posted on

i have the visor from my previous helmet. does the air attack by itself have the ability to connect to the visor/does it have the three magnetic round points on the front of the helmet like the air attack shield?

Best Answer Responded on

This one doesn't have the magnetic points like the Shield model. Just the Shield model has magnets

does this come with the visor?

Posted on

does this come with the visor?

Best Answer Responded on

Hello Frenky,

This helmet does not come with a visor.

Responded on

You are looking for the giro air attack shield. It costs $40 more and is also in competitive cyclist. They list it as a different product.

5 5

surprisingly impressed

This was an impulse purchase. After seeing a few people on the road with it and liking the low profile looks of it, I thought it might be a good winter riding helmet. I tried a friend's on, and was surprised at how comfortable it is on my head. Not sure if it is the suspension system, light weight, or it just fits my roundish head better than my current Specialized or previous Bell helmets. In either case it was comfortable. What I noticed on the road were two things: it vents just fine at moderate speeds, and the helmet is eerily quiet. I always thought that wind noise was mostly just from moving down the road, but after wearing this helmet, it seems like there's a lot of noise that comes off of vented helmets. In any case, I love it. It'll be my winter riding helmet for now, and will switch to my Specialized for climbing days and during summer. If Giro puts this Roc Loc Air suspension on a vented model, I will for sure buy another one. It's surprisingly comfortable.

Giro: Developing the Air Attack -A Shift

Posted on

By Giro Sport Design

4 5

Measurable Gains.

  • Gender: Male
  • Familiarity: I've put it through the wringer

According to Giro's data, the Air Attack provides an 11% increase in aerodynamic efficiency over the Giro Aeon, and it comes in around 166 grams lighter than the Selector. Impressive. In real world application, I found a noticeable difference in my descent and flat course times. In fact, on my backyard Cat.3 descent, Royal Street, I increased an average speed of 32.7mph to 34.3mph - a gain of around 15 seconds over 4.7 miles. Again, impressive. In terms of climbing, I didn't experience any obvious benefits, but more importantly, we didn't experience any obvious overheating. Again, I'll reference Giro's data and say that the Air Attack is supposed to have 97% of the Aeon?s cooling properties. However, that remaining 3% does lead to a slight stifling sensation through climbs that are above 75 degrees Fahrenheit. Was it the end of the world? No. Were the marginal gains worth it? I say yes.

5 5

Great Lid for Winter, and fit to live by

  • Familiarity: I've put it through the wringer

This helmet beat my expectations in the summer, but the added coverage makes winter riding much more comfortable.
Additionally, the Roc-loc air retention system would make me buy this helmet on fit alone.
The system's forehead pad is slightly positioned away from foam, reducing any pressure points caused by different head shapes.

Great Lid for Winter, and fit to live by
5 5

Great triathlon helmet

  • Familiarity: I've put it through the wringer

I got this before doing my first ironman. I don't like the traditional aero helmets. This helmet delivers, very comfortable over the full distance. Great adjustability.