You are using a web browser we don't support. Please use the latest version of one of these browsers.

Mozilla Firefox

Google Chrome

Apple Safari

Microsoft IE

Back to top
Matte Flame/White/Titanium
Matte Flame/White/Titanium

Please select a color/size.

Giro Hex Bike Helmet Video

The Giro Hex bike helmet fuses a muscular, progressive style with the versatility needed for aggressive trail riding. It's also an impressive value.


  • Hex helmet suggested uses inlcude MTB all-mountain and trail riding, and MTB endurance/marathon
  • Roc Loc 5, the newest retention system from Giro, makes adjusting fit tension and vertical position easier and more comfortable than ever; loosen/tighten with a simple twist
  • In-mold technology bonds the helmet's tough outer microshell to the impact-absorbing expanded polystyrene liner, creating a light, cool and strong helmet
  • 21 vents ensure great airflow around head
  • Visor offers 15° of vertical adjustment


View all Giro Mountain Bike Helmets

REI membership


Best Use Mountain Biking
Helmet Style Mountain
Head Circumference
20 - 21.75 inches
21.75 - 23.25 inches
23.25 - 24.75 inches
Vents 21
Visor Yes
Weight 304 grams
Gender Men's

The REI Difference

100% satisfaction guaranteed

We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

Gear & advice you can trust

At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

10% annual member refund

Anyone can shop at REI, but for a one-time $20 fee you can become an REI member and enjoy a lifetime of benefits. These include an annual member refund, typically 10% back on eligible purchases.*



*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more