Fox Clothing Proframe Clyzo Mips Full Face MTB Mountain Bike Helmet

With Mips technology to protect against rotational forces on impact, dual-density EPS liner, and a superlight shell, it’s the go-to for riders looking for safety and performance in one confidence-boosting package.
The standout feature for the Proframe helmet is the integrated chin bar, which allows for full-face level coverage without sacrificing airflow. Its design seamlessly blends the worlds of protection and breathability, making the Proframe helmet a unique helmet and a true ride partner on the trail.
Key Features:
- Mips® added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain
- 3-position adjustable visor compatible with goggles
- Increased ventilation and decreased surface contact area improve cooling
- Includes additional pad set to optimize fit
- Meets the ASTM-F1952 Downhill MTB certification standard
The Proframe Clyzo Helmet takes lightweight breathability to the next level of safety and performance. Featuring the Mips Integra Split protection system, and 3-position adjustable visor, it meets the needs of all-mountain riders and enduro racers.
Occasionally, without notice, manufacturers change product design and/or specifications.
Fox Proframe Helmet Size Guide
Use the below chart and guide to find the correct size Fox helmet for you.
|
Size |
Head Size |
Cheek Pads |
Hat Size |
Weight |
|
S |
51-55 cm |
20/30 & 30/40mm |
16.2-17.5 cm |
620±30 g |
|
M |
55-59 cm |
20/30 & 30/40mm |
17.5-18.8 cm |
630±30 g |
|
L |
59-63 cm |
20/30 & 30/40mm |
18.8-20.1 cm |
700±30 g |
How to measure
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.

Once you know the circumference of your head, see the available sizes shown on the product and select the appropriate one.
The majority of cycling helmets have some form of adjustment for size, usually in the form of a ratchet adjuster to tighten or loosen the straps, some helmets will also come with different thickness pads to further customise the fit.
Read our clothing size guide for more information on sizing.
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