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One Industries Gamma Regime Helmet

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Item # ONI000E

Don't worry though, we have a lot more Mountain Helmets in stock than that.

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Item # ONI000E


The One Industries Gamma Regime Helmet gives you moto-rated protection, without weighing you down. There are plenty of downhill racers and freeriders who won’t ride with anything less than a DOT approved moto helmet, since they’re certified for high speed impacts. And that means that when you sample some dirt, your head will be protected, so you’ll stand the best possible chance of walking it off, instead of getting carted off.

DOT certification exceeds the safety standards set forth for cycling helmets, and the Gamma passes those standards with room to spare. But its protection doesn’t mean much if you strain your neck railing a berm with the helmet on. That’s why One used a pre-preg fiberglass shell, which is not only strong, but lightweight. The shell is paired with a dual density EPS liner adding even more ability to slow impact forces.

Large flow-through ventilation ports help to keep your head from overheating. Admittedly, it’s not as heavily vented as some bicycle-specific offerings, but there’s a strong case to be made that the added protection more than makes up for it. And the removable head liner is easily washable, so any extra sweat you do expel won’t lead to a prematurely funky helmet.

The One Industries Gamma Regime Helmet is available in six sizes, from X-Small, to XX-Large, and in the color White/navy/chartreuse.

Tech Specs

[shell] pre-preg fiberglass, [liner] EPS foam
Adjustable Vents:
Multiple Impact:
Claimed Weight:
1325 g
Recommended Use:
downhill, freeride
Manufacturer Warranty:
1 year

Size chart

One Industries

Head Circumference 20.9 - 21.2in
(53 - 54cm)
21.4 - 22in
(55 - 56cm)
22.1 - 22.9in
(57 - 58cm)
23.1 - 23.9in
(59 - 60cm)
24 - 24.5in
(61 - 62cm)
24.6 - 25.5in
(63 - 64cm)
Hat Size 6 5/8 - 6 3/4 6 3/4 - 7 7 - 7 1/4 7 1/4 - 7 1/2 7 1/2 - 7 3/4 7 3/4 - 8
Head Circumference 18.7 - 19.2in
(47 - 48cm)
19.2 - 20in
(49 - 50cm)
20.1 - 21in
(51 - 52cm)
How to Measure:
Measure around your head above your ears where a hat fits comfortably.

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