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Arai Defiant-X Solid Helmet

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Arai Defiant-X Solid Helmet Review and Sizing Info from STG

  • Arai Defiant-X Solid Helmet Sizing We feel the Arai Defiant-X Solid Helmet has an Intermediate Oval Shape, while offering a comfortable fit with an easy on / off effort as compared to other race style helmets.
  • Arai Defiant-X Solid Helmet Certification Snell 2020 and DOT Approved.

Information from Arai Helmets:

You value independence. You're self-defining. What you believe in is Yours, and Yours alone. For riders looking to establish their own identity. The Defiant-X is Your self-defining helmet.

Arai Defiant-X Solid Helmet Fitment

Arai Defiant-X Solid Helmet Fitment

Intermediate Oval: 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.

Arai Defiant-X Solid Helmet Technical Features:

Arai Defiant-X PB-CLC Shell

Arai Defiant-X Solid Helmet PB-CLC Shell: Peripheral Belt construction born from F1 technology. The PB-cLc shell features technology developed in the highest level of racing in the world: F1. The Defiant-X shell is constructed from the layering of many materials with proprietary adhesives which allow for a larger eye port. Protection is further enhanced by the Super Fiber Belt that strengthens the shell like the bands of a barrel. This distinct belt resists the widening of cracks encountered in an impact while evolving our most advanced shell in strength, weight, and protection.

Arai Defiant-X Solid Helmet Dual Function Front Duct

Arai Defiant-X Solid Helmet New IR Neck Roll Pad: When open, air flows freely into the helmet. When closed, the QVF-2 Duct prevents air from entering and functions as an exhaust duct, allowing hot air to be pulled from the helmet interior.

Arai Defiant-X Solid Helmet Anti-Microbial Interior

Arai Defiant-X Solid Helmet Anti-Microbial Interior: Featuring our anti-microbial material, using a low acidic fabric to help maintain a balanced pH level with the skin. It is also odor resistant helping the helmet stay fresher, longer in between cleanings.

Arai Defiant-X Solid Helmet Fixed Chin Curtain

Arai Defiant-X Solid Helmet Fixed Chin Curtain: Larger and helps to block out wind noise and control airflow efficiency under the helmet by creating a low-pressure zone in the mouth area, helping to draw breath out of the helmet. Made with water repellent materials it helps block rain and will not weigh down with water.

Arai Defiant-X Solid Helmet Mouth Vent and Eye-Port Ventilation

Arai Defiant-X Solid Helmet Mouth Vent and Eye-Port Ventilation: To enhance the strong shell design, the open-close shutters are placed inside of the helmet. Air can flow over the mouth for a demist function by opening and closing these shutters.

To further enhance internal airflow, air channels originally designed for the Corsair-X were borrowed and updated and connected to new exhaust ports on the chin bar. This increased airflow reduces fogging potential and increases rider comfort.

Arai Defiant-X Solid Helmet Rear Duct

Arai Defiant-X Solid Helmet Rear Duct: The upper QVR-2 rear duct has three vent holes controlled by a single sliding gate. When open, air is pulled from the helmet interior. Additional side and neckroll exhaust ports keep the back of the head comfortable by removing hot air as well.

Arai Defiant-X Solid Helmet 5MM Peel-Away Cheek & Side-Temple Pads

Arai Defiant-X Solid Helmet 5MM Peel-Away Cheek And Side-Temple Pads: Arai's exclusive 5mm peel-away surface pads on both sides of the headliner and in the FCS® Cheek Pads give you the option of 5mm more of interior width if needed (minimizing the need to purchase optional thickness pads). Yet another level of fit customization no other helmet brand offers.

Arai Defiant-X Solid Helmet Pro Shade System Compatible

Arai Defiant-X Solid Helmet Pro Shade System Compatible: This model accepts the optional Pro Shade System.

Note: All helmets come with a clear shield

Write Review

  • 5
    Arai Defiant-x

    Posted by Jonathan Francisco on 28th Jul 2021

    Disclaimer: this is only my 2nd helmet. I decided to upgrade from my first helmet. It was an HJC around 150 bucks.. would hurt my head after about an hour of riding (less if I was wearing sunglasses). After my first hour or 2 in the helmet I kept wondering if it was loose, its not. I just felt that way because there is so much ventilation in this thing I could actually feel it around my head. I thought that was a gimmick. Before I could not leave the vent closed while at slow speeds or stops because it was too hot. I was shocked how cool I remained in the defiant x. Also, I moved my cardo system to this helmet and the sound quality is hugely improved thanks to the tear away foam slots made for helmet speakers. The handmade quality of this helmet blows me away and I am so glad I made the right decision. I think I just became an Arai customer for life. Thank you Sportbike Track Fear for being the only ones who had my color choice in stock!

  • 5
    Arai Defiant X

    Posted by JJ on 9th Oct 2019

    Semi oval helmet fit, so if your current helmet applies pressure to your forehead you might need a semi oval helmet... Vents everywhere, easy windshield swaps, retained hinge covers. Nothing to complain about!