Arai VX-Pro4 Stream Helmet
- Peripherally Belted Complex Laminate Construction (PB-CLC) shell
- Chin bar vent grill installed on a rounded chin bar, mounted form the outside on the exterior vent cap and can be easily removed for cleaning or damage replacement—vent cap also designed to break way from the chin bar in event of impact
- Features intermediate oval shape which fits the majority of head shapes in the North American markets
- Consistently round and smooth shell, maintaining Glancing Off shape concept
- Super Fiber provides 30% higher tensile strength than standard fiberglass and provides increased penetration resistance
- Rounded chin bar maintains compact shell length resulting in less protrusion, leaving it less likely to catch and dig during a spill
- The Air-Through top-rear-duct center brace also functions as a goggle-strap locator
- Diffusers can be removed or replaced quickly and easily by removing a single screw on the rear-duct center brace
- Removable neck roll allows easy and convenient cleaning of the helmet
- Emergency release cheek pad design allows trained medical personnel easier access to an injured rider, reducing the chance of unintentional injury
- Air outlets on the peak are made larger to compensate for increased lift and is made with durable, yet extremely flexible material, mounted with plastic screws designed to break on impact, so as to not snag on impact which could send energy into the helmet or cause excess rotational force
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Sizing Information
| Size | Head (inches) | Head (cm) |
| XS | 20 7/8 – 21 1/4 | 53-54cm |
| Small | 21 5/8 – 22 | 55-56cm |
| Medium | 22 1/2 – 22 7/8 | 57-58cm |
| Large | 23 1/4 – 23 5/8 | 59-60cm |
| XL | 24 – 24 3/8 | 61-62cm |
| XXL | 24 3/4 – 25 1/8 | 63-64cm |
This chart is just a starting point for determining the correct size Arai for you. For an in-depth look at Arai helmet sizing, click here
Need help choosing the right shape and size helmet for your own noggin?
Learn about the LidPicker!
VX-PRO4 FIT
ARAI IS THE ONLY COMPANY OFFERING MULTIPLE INTERIOR-FIT SHAPES TO BETTER ADDRESS THE INFINITE VARIETY OF RIDERS’ HEAD SHAPES AND SIZES.
No one pays more attention to the subtle variations and infinite possibilities of the human head shape than Arai. Why? Because it’s the secret to getting the best comfort and fit.
So for more than three decades, Arai has pioneered different shapes – and even different proportions within those shapes – in our various helmet models, working to offer a better fit for more people.
The VX-Pro4 has Arai’s INTERMEDIATE OVAL (IO) interior fit shape.
A Helmet needs to be tried on in order to determine a proper fit.
