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Giro Advantage 2 Helmet

Out of Stock

Item # GIR0270

This model is no longer in stock.

Item # GIR0270


Prepare for liftoff.

Designed and tested in the wind tunnel, the Giro Advantage 2 has proven to be the most comfortable, well ventilated, and aerodynamic time trial helmet on the market. Giro has taken over 20 years of helmet design to establish their proprietary Super Fit Engineering. That means they create the helmet in three sizes based on 'human scale factors' data that they've amassed over their years of hand-crafting helmets. The helmets are intended to fit snugly and securely while still accommodating about 98% of the population's size variances. The idea is that it will look and feel like it has been custom made for your head.

That might sound like a pretty big campaign promise, but Giro's development of their Roc Loc 5 Fit System has made it possible to make those micro adjustments. With the Roc Loc system, you can custom tune the fit tension as well as the fore and aft tilt of the helmet with one hand. Though other helmet manufacturers have similar adjustability options, none of them even come close to the weight of the Roc Loc system: it is almost 40% lighter than comparable systems. In a helmet style not typically known for being light, this is a significant reduction.

Remember those days in the early 2000s when the UCI made it so that aero helmets had to have the same EPS safety foam as the regular road helmets? For those of you who never missed a Lance Chronicle, you'll remember the Giro guys going through all sorts of hell to get an aero helmet ready that would be acceptable to both the UCI and Lance. The Advantage 2 is the love child of that relationship. Through the use of In-Mold construction, the durable but light outer shell is permanently fused to the impact absorbing EPS foam liner. This process enhances the effectiveness of both parts. In fact, the fusion process actually reinforces those formerly vulnerable spots around the vents and ribs.

Keeping your head cool during even the hottest, most critical time trials is something Giro focused a lot of attention on. Their helmets feature the proprietary Wind Tunnel Ventilation System. It is an elaborate design that combines five front vents with exhaust channels leading to the rear. The effect is that the fresh, cool air from the front is strategically channeled around the head to help evaporate sweat, then pushed out the rear exhaust openings. It's a design that you'll appreciate on every ride.

The Giro Advantage 2 comes in three Super Fit sizes: Small, Medium, and Large. It is available in the color Matte Black/white.

Tech Specs

[shell] polycarbonate
Adjustable Vents:
Fit Adjustment:
Roc Loc 5, slidelock chin
Recommended Use:
time trials, triathlon
Manufacturer Warranty:
1 year

Size chart


Adult Cycling Helmets
 SMLXLAdult UniversalWomen's Universal
Head Circumference 20 - 21.75in
(51 - 55cm)
21.75 - 23.25in
(55 - 59cm)
23.25 - 24.75in
(59 - 63cm)
24 - 25.55in
(61 - 65cm)
21.25 - 24in
(54 - 61cm)
19.75 - 22.5in
(50 - 57cm)
How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

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Here's what others have to say...

5 5

Value + extra speed = happiness

If you don't have the $ for wind tunnel testing and expensive aero wheels, then your best option for improving aerodynamics is to buy a helmet like this one. (I am assuming most people already have a good bike fit.) All the data out there shows that the cheapest way to cut through the wind is to buy an aero helmet. You have many options to choose from these days, but for comfort and extra speed in hot summer triathlons, the Giro Advantage 2 is tough to beat.

5 5

Great Gear!

I've been racing for a few years and finally bought a TT bike and then this helmet. My first race was today and I noticed an increase in speed over my normal bike split. Stayed pretty cool and was more silent than my regular road helmet. I'm very happy with the results. Looks good too.

5 5

Must have

A must-have if you want your efforts to show on the TT course. I like this helmet for it's light-weight and comfort. Needless to say it is fast and aero. This helmet has helped me achieve several TT wins this season.

5 5

Good looks and speed

The shape and color look sweet. Most other TT helmets (i.e. LG) look dorky but this one looks pretty awesome. I got the 2011 Matte Black/White one. They say these make you hot because of the lack of ventilation... well maybe if you're racing for hours in the Mojave. It's comfy enough for me.

Unanswered Question

I'm lookin at the color selection for the...

Posted on

I'm lookin at the color selection for the Advantage 2...one combo clearly matches the cycle best...Is the black version going to be hotter than the others...thinking about summer.