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Item # GIR0112

This model is no longer in stock.

Item # GIR0112


At the risk of sounding shallow, we dig the looks of the Hex as much as the bomber tech.

Why does it seem that the cooler helmets look, the more they cost? Ask Giro the same question and you'll be surprised at the answer, because the Giro Hex brings aggro MTB styling and impact protection to the trail at a price that won't give you wallet rash. Designed for recreational riders, racers and freeriders on a budget, the Hex features in-mold construction, expanded rear protection, Roc-Loc 4 fit, a visor, and 21 vents to keep you cool under fire.

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.

Reviews & Community

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Giro Hex Bike Helmet

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Here's what others have to say...

5 5

Just right

I use my Hex for everything but riding my DH bike. The adjustments are all easy and the retention system works well on my noggin. I've tried the Xen as well, but the shape doesn't work on my skull. The Hex is cheaper than the Xen, fits better, looks better (in my opinion), and probably protects just as well. Win!

4 5

The only helmet thats doesnt amke me look like a dork

The only helmet that doesn't make me look like a dork

5 5


I'm not gonna lie, I bought this helmet because I think it looks bitchin'. I love the way the vents look, like the air intakes on a turbocharged engine. Turns out it was a good purchase. It vents really well, even at low speeds. It's comfortable (I've worn it for 100 mile mtb races with no problems). It protects better than road helmets, without sharp points to catch on things and with better coverage on the back of the head. The vents even work particularly well with the helmet mount for my NiteRider lights. It's not the lightest, but I think it's better. I'll buy another when I destroy this one.

5 5

Great all mountain helmet

Great helmet fits well. Nice and breathable and great price for the product. Light weight and stays out of the way while your ripping down the trail. props to huck n roll for the quick shipping and exchanging for the right size. L

5 5

Great Helmet, Great Value

The helmet fits great. I haven't had to test the safety factor yet, fortunately. It came with a set of Giro Fader sunglasses, so that was definitely a plus on the value side. A good buy overall.

My head size falls right in between a M/L....

Posted on

My head size falls right in between a M/L. 23.25" or 59cm. Can I settle for a Med. or do I need a Lrg?

Responded on

From what I've learned about Giro and trying different models on in both bike and snowboard helmets, is they fit a little more elongated in the dome. Not a bad thing but in one man's opinion, I think it would allow for you to size down rather than up. Great helmet.

5 5


This is a great helmet. Good price, really good ventilation, adjustments are easy, fit is comfortable, ample protection. I ride confidently wearing this. Highly recommended!

5 5

Got that

Pretty much a perfect lid. Super light and very well ventilated - important in Utah where it can often still be in the 90s out during your after work ride. The fit system is a cinch; the Hex can be snugged down in moments. I'm loving how this helmet is looking too, the all black is real sleek and doesn't have the typical egg-headed bike helmet look. I bought this for mountain biking, but I'll wear this on my to/from work commutes on the old road bike and the somewhat aggro style and visor gets me made fun of by road bikers. That's fine by me. I don't ever aspire to have roadies think I'm cool.

5 5

Can't go wrong here

This helmet fits well, has good coverage, breathes just the right amount and is just ugly enough for me not to care about it getting muddy and dinged up. I have a fairly large noggin and this helmet fits great!

5 5


Super comfy, no pressure points, and looks awesome!

5 5

Easy Breezy

This is my go-to lid for anything short of full-on downhill. Cross-country, freeride or whatever, if I don’t need a full-face I’m reaching for the Hex. The Roc Loc system makes the fit great right out of the box, and there are tons of vents to keep my head cool when it’s baking hot. I should also mention that it’s light, it looks good, and it doesn’t cost a mint.

Easy Breezy
4 5

A New Brainbucket For Roadkill

Its a tough world out there sometimes...and sometimes you're going to fall. Sometimes that fall is going to be on your head...either full-on or a glancing blow...let me say that the Giro Hex besides looking awesome (mine is the Camo and I already had the matching bandana!) this brainbucket is a real winner! Light-weight but really well constructed and all the adjustment points to make it fit me personally with enough room to velcro in speakers inside so I dont have to wear headphones.
Not looking forward to taking a shot to the noggin...confident that this helmet can take the

A New Brainbucket For Roadkill
5 5

Great Price!

Good all around helmet at a great price!

5 5

saved my life twice

This helmet save my noggins a few times. I'm a new mountain biker and the first time I went, I flew over the handlebar and landed on my head first which was a pretty hard packed single track and I was going really fast downhill. My neck got really sore the next day, which meant that I took the hit really hard.
I didn't cracked my helmet or anything. And, the second time, I fell off a cliff 30 ft down and bang my head a few times. I got bruises from the helmet around my forehead. NOTHING cracked, including my noggin. My helmet stayed on my head, the strap held up real well. I can't say enough good things about this helmet. I will definitely buy this same one or at least same brand when I need a new helmet. Great fit, great ventilation, and great protection. A little bit pricier than some, but why would you want to skimp out for something for your head? I would highly recommend this helmet.

5 5

Review Title

I just wrecked really hard this past Labor day weekend and my 3 yr old Hex stood up to the beating I gave it with out much impact on my head. It is cracked now so I'm gonna be getting a new one today, thanks for the great price on a great helmet. I attached a pic of my helmet after the crash, it was a doozy.

Review Title
5 5

Great Helmet

This is a comfortable and decent looking helmet. It fits well and looks as good as possible for a bike helmet. I'm very pleased with this purchase.

4 5


right our of the box, this is a simple helmet to adjust, dial in a comfortable fit, and start riding. It's supremely well vented, has adequate internal padding, and fully covers my melon without feeling or looking like Toad from Mario Kart's domepiece.

Are those 2009 or 2008 helmets?

Posted on

Are those 2009 or 2008 helmets?

Best Answer Responded on


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