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Fox Full Face MTB Helmet

An open face trail helmet does a good job protecting the top and back of your head. It does nothing for your jaw, chin or the front of your face, which is exactly where a rider tends to land in a proper face plant. Fox full face helmets for MTBs are for the moments an open face helmet was never designed to handle: enduro racing, downhill runs and full days at the bike park, where the consequences of getting it wrong are a lot more serious than a graze.

Ivanhoe Cycles has been fitting Melbourne riders with the right protective gear for nearly 40 years. As a family-owned Australian bike shop, we'd rather spend ten minutes with you getting the fit right in store than sell you the wrong helmet online.

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Proframe or Rampage: Which Fox Full Face Suits You?

The Fox full face range is split into two fairly different jobs, and picking between them comes down to how much pedalling you're doing versus how much time you're spending pointed downhill.

The Proframe, Proframe RS and Fox Youth Proframe helmets are built for enduro riders who still need to climb between runs. They're noticeably lighter than a traditional DH lid, generally sitting somewhere in the 750 to 850 gram range depending on size, with big vents cut into the chin bar and shell to keep you cool on the way up. You give up a little coverage, but it’s worth it for enduro and trail riders. 

The Rampage, Rampage Pro Carbon and Fox Youth Rampage sit at the other end. These are heavier, generally in the 1,000 to 1,300 gram range, with a thicker shell and denser foam built for repeated bike park laps rather than long climbs. If you're getting chairlifted or shuttled to the top most of the time, the extra weight isn't something you'll notice, and the added coverage is worth having.

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How Fox Full Face MTB Helmets Protect Your Head

Most impacts aren't perfectly straight on. A glancing hit at an angle creates rotational force on the brain, which is a big part of what causes concussion. A full face Fox helmet has MIPS built in specifically to deal with this: a low friction layer inside the helmet that lets the shell shift slightly against your head on impact, redirecting some of that rotational energy rather than transferring all of it straight to your brain.

Underneath the MIPS layer, Fox full face helmets use a dual-density Varizorb EPS foam, which spreads the impact across a wider area than a single density foam liner would. The visor is designed to be a weak point on purpose. If you catch it in a fall, the screws shear off cleanly rather than yanking your head sideways, which is a small detail that matters more than it sounds.

Ventilation and Getting Your Goggles to Fit

Fox full face MTB helmets come with a fair bit of engineering when it comes to fighting the heat. Large intake ports sit across the chin bar and forehead, with exhaust vents at the rear pulling air through rather than just letting it sit stagnant inside the shell.

The eyeport is shaped specifically to nest Fox's own Vue or Main goggles without gaps, which stops fogging around the edges where a lot of cheaper helmet and goggle combinations struggle. If you already run goggles from another brand, it's worth trying them on with the helmet in store before you buy, since eyeport shapes do vary between manufacturers.

Fidlock Buckles and Fitting the Liner to Your Head

Fox uses a Fidlock magnetic buckle across most of the full face range, which lets you fasten or release the strap one-handed, useful when you're already holding a bike or wearing thick gloves. Inside, the cheek pads and crown liner are removable and washable, with a few different pad thicknesses available if you need to fine tune the fit once you've had the helmet a while and the foam has packed down slightly. Some models also use a micro-adjustable BOA dial for a more precise fit around the back of the head.

Hand wash the pads in cold water rather than machine washing them, since the foam holds its shape better that way over the life of the Fox full face MTB helmet.

Complete Your Cycling Setup With Our Help

Round out your protection with a set of MTB gloves and check out our wider MTB protection range for knee and elbow guards to match. If you're weighing up an open face option instead, our full bike helmet range covers everything else we stock, and if the bike itself needs an upgrade to handle where you're planning to ride in this helmet, take a look at our dual suspension mountain bikes.

Frequently Asked Questions

What is the structural weight difference between a Fox Proframe and a Fox Rampage helmet?

The Proframe is noticeably lighter, generally around 750 to 850 grams depending on size, compared to roughly 1,000 to 1,300 grams for the Rampage range. That weight goes into a thicker shell and denser foam built for bike park laps rather than climbing.

Are these Fox full face helmets fully certified for actual downhill racing competition use?

Yes, the Rampage and Rampage Pro Carbon are built to meet downhill certification standards suitable for competition. The lighter Proframe range is more commonly used for enduro racing, where riders also need to pedal between timed stages.

Can I remove the internal cheek pads to wash them after a hot day of trail riding?

Yes, the cheek pads and crown liner are removable on all current Fox full face models. Hand wash them in cold water rather than using a machine, since this helps the foam keep its shape for longer.

How does the MIPS system inside a Fox full face MTB helmet protect my brain during an accident?

MIPS is a low friction layer that allows the helmet's shell to move slightly against your head during an angled impact. This helps redirect rotational force away from your brain, rather than transferring the full force of a glancing hit straight through.

Will standard mountain bike goggles from other brands fit cleanly inside the eyeport?

Most goggles will fit reasonably well, but the eyeport is specifically shaped around Fox's own Vue and Main goggles for the cleanest fit with no gaps. If you already own goggles from another brand, try them on with a Fox full face MTB helmet in store before buying.

How do I measure my head circumference correctly to choose between a medium and large Fox shell?

Wrap a soft tape measure around the widest part of your head, roughly an inch above your eyebrows, and check that figure against Fox's size chart rather than assuming your usual size carries across. Our team can also measure you up properly in store if you're between sizes.

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