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Arai Defiant Chronus Full Face Helmet

Snell 2010 Certified
Was $749.95
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Arai Defiant Motorcycle Helmet Review
Why Choose Arai Helmets? What Makes Arai Different? More Protection in a More Expensive Arai Helmet?
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Arai Defiant Chronus Full Face Helmet

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A benchmark in comfort, quiet, stability, and ventilation in a street helmet. The helmet you'd build if you wanted to treat yourself to a dream. Every feature optimized for the conditions, speeds, and environment of the real world. A helmet for other top of the line models to envy.

Hand Formed Natural Shell Shape:

  • The foundation of every Arai helmet is a basic and simple organic shell shape
  • The smooth uninterrupted spherical shape transfers stress loads more evenly across its entire surface
  • The Defiant has an evolved version of Arai's very popular Intermediate-Oval (IO) interior shape

Handmade Craftsmanship:

  • Arai's exceptional handmade craftsmanship, made to a higher standard of protection comfort, and quality

IR Front Spoiler Edge:

  • The IR front spoiler edge trim creates a stabilizing down force
  • Reduces buffeting, lifting and wind noise that can be generated by the turbulence trapped between your shoulders and the bottom of the helmet

Advanced Ventilation:

  • Ventilation and aerodynamics are designed to work together to flow more air while reducing drag
  • The IC-4 upper front intake vents have a slide gate closure that seals completely when closed, allowing for a cleaner airflow while closed
  • ACR-4 flow through exhaust vent also allows airflow to pass over and through the vent, accelerating exhaust flow from helmet interior when open, and reducing drag when closed

SAI MAX-Vision Brow Vent Shield:

  • SAI eye port has 5mm more peripheral view at each side
  • Vent shield combines with SAI eye port with a full eye port cavity to accent the Pin Lock 100% Max Vision lens
  • Offers a larger anti-fog field of view
  • Clear Pin Lock 100% Max-Vision Brow vent anti-fog lens included with helmet

Aerodynamic Exhaust Vent Cowling:

  • More aerodynamic upper and side exhaust vent cowling
  • Sculpted to enhance stability while increasing exhaust efficiency
  • The side vent cowls are tailored to the needs and speeds of the street
  • Compared to the C-V, the RX-Q's, cowlings are larger and more aggressively styled, as lower street speeds require more surface area and a more refined shaping in order to deliver the increased stability
  • High speed performance is also excellent

IR Chin Vent:

  • Offers more than simply an aggressive look, it also provides multiple functions with tangible benefits for the rider
  • Position 1 allows air to flow through the top port and up the inner surface of the shield for de-fogging
  • Position 2 allows air to flow through the bottom four ports to the mouth
  • The design also allows for easy vent replacement

Brow Vent Channeling:

  • The face shield Brow Vents, like those of the Corsair-V, redirect incoming air to the temples instead of the forehead and around the ear area
  • Stale air is extracted out the side exhaust cowls
  • Airflow over the temple artery reportedly also helps cool the blood flow to the brain area
  • This simple re-purposing of two existing vent features greatly improves helmet performance and rider comfort

Micro-Fittable Removable Interior:

  • Fully removable/replaceable/washable interior comfort head liner, cheek pads, chin strap covers, and neck roll pad
  • Cheek pads have a 5mm peal away layer to assist with facial fit and comfort
  • The head comes standard with 5mm peel away temple pads to add another level of customization, giving the helmet interior extra width when needed

FCS (Facial Contour Support) Cheek Pads:

  • The contoured shape, combined with multiple layers of varying foam densities, supported by a patented spring, cradles the face like nothing that has ever come before
  • The FCS cheek pads arc gently, simultaneously holding the cheek and jawbone firmly for a secure fit for incredible all day comfort without pressure
  • A bonus feature for the FCS cheek pad is the effect is has on lowering interior noise levels

Removable Neck Roll:

  • The IR Neck Roll pad has an improved shape to flow more air to the bottom of the helmet at lower speeds and improves rider comfort
  • The shape also makes it easier to put on and take off with less contact and pressure on the ears
  • Water repellant material along the bottom edge improves comfort for a dryer ride in wet conditions
  • DOT and Snell 2010 approved


Age & Gender
Model Name for Gear
Safety Certification
Snell 2010 Certified

Item Numbers

Details Item Number Availability Store Pickup
Details:Black/Green  XXS Item #381-8779 Availability:Backorder: Ships in 7-12 daysStore Pickup:Unavailable


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