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Item # ONI0023

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Item # ONI0023


There are plenty of full face helmets on the market today, but few cycling-specific full face helmets can claim to be DOT certified -- and be as light as the One Industries Atom Helmet. One Industries has stepped into the mountain bike game with extensive moto experience, and because of that know how, they're able to offer one of the highest-safety rated helmets available.

DOT certification exceeds the safety standards set forth for cycling helmets, and the Atom easily passes those standards. You'd be hard pressed to find another mountain bike helmet that can claim that. But, while safety first is the name of the game, helmet weight is an equally important factor.

You don't want to blow up your neck muscles midway through a day of lift riding due to a weighty helmet. The Atom features a lightweight polycarbonate shell that's reinforced with a alloy crown for superior impact absorption and an excellent strength to weight ratio. The shell is paired with a dual density EPS liner adding even more ability to slow impact forces.

The EPS liner and shell have flow-through ventilation with large intake and exhaust ports to keep your noggin cool. But no matter how much air flow you can push through a helmet you're still going to work up a sweat. So, to keep the Atom from becoming a stink bomb, the moisture-wicking Nylex comfort liner is removable and easily cleaned.

The One Industries Atom Helmet comes in Rockstar Black, Bolt Black/Orange, Bolt Black/Gray, Bolt Red/Orange, Beemer Black, Beemer White, Cypher Black/Red and sizes X-Small through X-Large.

Tech Specs

Adjustable Vents:
Fit Adjustment:
chin strap
Recommended Use:

Size chart

Fuji Bicycles


Geometry Chart


Altamira LTD

Seat Tube


Effective Top Tube








Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop


Chainstay Length



44 44.0cm 51.5cm


36.3cm 72.1cm


72.0 deg 75.0 deg 6.9cm 40.5cm 97.1cm
47 47.0cm 53.0cm


37.0cm 74.1cm 13.0cm 72.5 deg 74.5 deg 6.9cm 40.5cm 97.7cm
50 50.0cm 54.5cm 54.0cm 37.0cm 76.0cm 14.0cm 73.0 deg 73.5 deg 6.9cm 40.5cm 97.6cm
53 53.0cm 56.0cm 56.0cm 37.9cm 78.3cm 16.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 98.6cm
55 55.0cm 57.5cm 58.0cm 38.9cm 80.1cm 18.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 100.1cm
58 58.0cm 59.0cm 60.1cm 39.7cm 82.1cm 20.0cm 74.0 deg 73.5 deg 6.9cm 40.5cm


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Here's what others have to say...


Simply Fantastic

  • Familiarity:I've used it several times

This is my first full face MTB helmet and it has not disappointed. Not overly heavy and after a full day of use your head and neck isn't stiff. As for protection, top notch. Besides being DOT certified, it just feels well built and provides that level of confidence when riding park. I'm extremely happy with my purchase, thank you Back Country for a great helmet at a great price.