Arai Contour-X Swirl Helmet
Features 3D Arai logo duct, just 3.5 mm in depth, feeds two central 10 mm intake ports Logo duct works well at low speed and with an upright riding position... Read More
Features
- 3D Arai logo duct, just 3.5 mm in depth, feeds two central 10 mm intake ports
- Logo duct works well at low speed and with an upright riding position and can be opened or closed easily with summer or winter gloves, via a short-stroke lever placed at the top— if the rider can't see the lever and the logo is in its normal place, the duct is open
- Logo duct is designed to breakaway in the event of an impact
- Aerodynamic rear spoiler with one piece exhaust function
- The one-piece aerodynamic rear exhaust/spoiler, operated by a 3-way switch, is inspired by the DF-X2 of the Corsair-X, but redesigned for touring use
- Rear spoiler sits a little more forward on the shell and is fed by 3 ports in the shell and efficiently draws air, but also smooths airflow over (and from the side) of the helmet, improving stability and reducing buffeting, especially while overtaking at highway speeds resulting in much less rider fatigue
- Manufactured as thin and light as possible, the aerodynamic rear spoiler is designed to crush or break away upon impact, therefore having no influence on protective performance
- 3-position (open, midway and closed) sliding air-scoop chin vent which flows a large intake volume of air and has a replaceable filter
- Sliding chin vent actuating mechanism is thicker and easy to use with gloves
- Designed to fit and connect a communication system easily on the shell exterior and without any compromise to the protection offered by the inner EPS liner
- Outer shell design outlines a stylish, organic shape and uses Peripherally Belted Complex Laminate Construction (PB-cLc2) for lightweight strength and integrated side ducts
- Extra layer of super fiber belting, in outer shell, maintains rigidity in a crucial area while offering flat sides for easy fitment of an intercom system
- With Variable Axis System (VAS), the visor mounting position is lowered, yielding an average of an additional 24 mm across both temple areas, in pursuit of the ideal smoother shape that increases the ability of glancing off energy
- Shell flares 5 mm around the opening, making it easier to get the helmet on and off (for newcomers to Arai, the initial 'snugness' when putting the helmet on or taking it off can be challenging)
- For a nice, clean final look and ride, a small stitched opening on the inside of the neck roll allows the intercom system installer to easily tuck away any excess wiring that may be left-over after installing the speakers
How to measure
Measure the circumference of your head in cm across the forehead, above the eyes and ears and over the small bump at the back of the head — read the size where the tape joins. Focus on head size (crown fit) first, then fine-tune with cheek pads. Arai stresses the chart is a STARTING POINT: the best fit comes from trying on Arai's different interior fit shapes.
Arai Helmets size chart
| Size | Head circumference (cm) | Head circumference (inches) |
|---|---|---|
| XS | 53-54 | 20 7/8 - 21 1/4 |
| S | 55-56 | 21 5/8 - 22 |
| M | 57-58 | 22 1/2 - 22 7/8 |
| L | 59-60 | 23 1/4 - 23 5/8 |
| XL | 61-62 | 24 - 24 3/8 |
| 2XL | 63-64 | 24 3/4 - 25 1/4 |
| 3XL | 65-66 | 25 5/8 - 26 |
One head-circumference chart covers all current Arai models — what differs per model is interior SHAPE, not size: Intermediate Oval (Corsair-X, Contour-X, Defiant-X, Regent-X, XD-4/XD-5, VX-Pro4 — fits most North American heads), Round Oval (Quantum-X), Long Oval (Signet-X). Try the shape that matches your head. Not every model runs every size (e.g. Corsair-X standard range XS–2XL). Arai publishes CM ONLY on every official arm — inch values here are exact conversions (×2.54, nearest 1/8″), not manufacturer-printed; retailer inch charts differ because they round differently. Labels normalized (XXL/XXXL → 2XL/3XL). Extreme sizes (3XS 49-50, 2XS 51-52) are select-model/special-order and not on the current chart. No youth motorcycle chart exists (the CK-6 is a karting helmet). Verified from araiamericas.com chart image + whyarai.co.uk 2026-07-13.
Manufacturer sizing data · verified July 13, 2026