Log In / Register
0 Checkout
Arai Defiant Base Helmet
  • Arai Defiant Base Helmet - Frost Black/White
  • Arai Defiant Base Helmet - Frost Black/White
  • Arai Defiant Base Helmet - Frost Black/Orange
  • Arai Defiant Base Helmet - Frost Black/Orange

Please select a Color and Size to check availability, or to add this item to your Shopping Cart or Wish List.

Select Color:

14011 14012

Select Size:

Size Chart
Savings (10%):

Select qty:

Please select a Color and Size to view availability.
Add to Wish List

Video Reviews (4)

Arai Defiant Base Helmet Videos

Arai Defiant Base Helmet

Designed specifically for the aesthetics and needs of street fighter and naked bike rider in mind, the new Arai Defiant Base is equally aggressive and feature rich, as one would expect from a new Arai helmet. Based on the fit and comfort of the Quantum, the Defiant was built for the upright riding position with its aggressive, integrated chin spoiler, which was designed specifically to guide wind around the neck and to improve the aerodynamic properties of the helmet. The Hyper Ridge Bumper circles the bottom of the shell both adding additional strength and also lowering the helmet's center of gravity, while flaring the helmet opening slightly to increase the ease of putting on, and taking off.

The Arai Defiant utilizes Arai's latest faceshield design, the SAI Max Vision Pinlock Shield with Brow Vents and includes Pinlock insert lens. The SAI Max Vision shield has been widened by 5mm left and right and offers one of the widest eyeports available for excellent peripheral vision.  


  • Aggressive new styling
  • Internals are redesigned with a focus on safety and comfort
  • Organic shell shape for superb energy management
  • New IC-4 Upper Intake vents seal more completely when closed
  • New ACR-4 flow thru exhaust vent allows greater air flow when open and reduces drag when closed
  • FCS R (Facial Contour Support) cheek pad design has 5mm peel away micro fit layer for greater personal fit
  • Cheek pads feature contoured shape, multiple density foam layer supported by a patented spring
  • New shell shape is easier to put on and take off
  • New water repellent material along bottom edge
  • Pull down spoiler works with new flared bottom to increase helmet stability
  • SAI Max Vision® Brow Vent Pinlock anti-fog lens insert included
  • DOT and Snell 2010 certified

Arai Helmet Sizing:

Size Head (cm)
2XS 51 - 52
XS 53 - 54
SM 55 - 56
MD 57 - 58
LG 59 - 60
XL 61 - 62
2XL 63 - 64
3XL 65 - 66

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How To Measure

H Head Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
Product Style RevZilla Item # Manufacturer Product # Availability
Frost Black/White / 2XS 886203 818829 Only 1 Left: Ships within 24 hours
Frost Black/White / XS 886204 818830 Only 3 Left: Ships within 24 hours
Frost Black/White / SM 886205 818831 In Stock: Ships within 24 hours
Frost Black/White / MD 886206 818832 In Stock: Ships within 24 hours
Frost Black/White / LG 886207 818833 In Stock: Ships within 24 hours
Frost Black/White / XL 886208 818834 In Stock: Ships within 24 hours
Frost Black/White / 2XL 886209 818835 In Stock: Ships within 24 hours
Frost Black/White / 3XL 886210 818836 Only 2 Left: Ships within 24 hours
Frost Black/Orange / 2XS 886195 818819 Out of Stock
Frost Black/Orange / XS 886196 818820 In Stock: Ships within 24 hours
Frost Black/Orange / SM 886197 818821 In Stock: Ships within 24 hours
Frost Black/Orange / MD 886198 818822 In Stock: Ships within 24 hours
Frost Black/Orange / LG 886199 818823 In Stock: Ships within 24 hours
Frost Black/Orange / XL 886200 818824 In Stock: Ships within 24 hours
Frost Black/Orange / 2XL 886201 818825 In Stock: Ships within 24 hours
Frost Black/Orange / 3XL 886202 818826 Only 3 Left: Ships within 24 hours


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
Arai Defiant Base Helmet 4.7 5 130 130
Arai Defiant Character Helmet-Red Medium I really did not have a shop out here (CT) that is well versed or has the stock to find out. I have had Quantum, and Quantum II(2), and looking at Defiant now. I have a head size between the two helmet sizes, SM 21.7-22” 55 – 56cm MD 22.4-22.8” 57 – 58cm So I have tried previous helmets from Aria in Small and the helmet strap is cutting into my neck and wind pipe. So I have always gone to the Medium size. The Defiant helmet has more birth when putting on the helmet, and is extremely comfortable. The liner is very stable but soft feeling. I purchased the helmet during the winter and have only had ten minute ride since receiving it. In communicating with Arai customer support during the purchase it was suggested to move to a thicker check pads, after the helmet breaks in. I will move to a 30 or 35 MM size check pads to provide a great fit as it is wearing in. I will add more once I get more road time. January 26, 2016
good quality, very happy Very happy with Revzilla and my helmet as they have produced what they advertised. Will definietely shop with them again January 19, 2016
Great helmet Good fit great airflow comfortable design is really cool I love it January 19, 2016
Confidence inspiring helmet! I've always bought affordable low cost value helmets and felt that they were good enough. Well recently my helmet fell apart and I thought I'd go ahead, splurge and invest in a top of the line helmet. After much research, I decided to go with the Arai Defiant Pro Cruise. All I can say is, WOW! This helmet is like a work of art, but still built like a tank! Every aspect of a helmet that should be considered has been considered. Its comfortable, its properly ventilated (maybe a bit too much at times). The only complaint I have are the brow vents. They tend to vibrate open at times and gets too breezy in the helmet. If you are considering this helmet and can afford it, by all means get it! You will be beyond satisfied. December 28, 2015
Well built but noisey I loved the design and the construction seems solid but in use the blunt face creates a high level of noise. Even ear plugs could not reduce the sound to a level that made the helmet a favorite. Today it sits on the shelf while a lesser helmet serves the purpose. December 14, 2015
Awesome Lid I've always been a fan of Arai and this lid has fueled my love. Pinlock is great, I couldn't fog the shield if I tried. Great airflow and fairly low noise. The only gripe I have is that I wish the Pro Shade didn't tapper so much on the sides bc the sun hits eyes on the evening comumute. I was surprised, however, that the shade when flipped up makes no noise and doesn't catch wind when head checking. Overall very happy and would buy again! December 8, 2015
Amazing helmet! Okay I ride a 2015 Ducati Monster 821. I bought a shoei rf1200 and it was great, comfortable vented okay and didn't move my head alot in the wind on the freeway. It was pretty stable. But I wanted something that vented better. So I got this aria defiant. And all I have to say is WOW! With my rf1200 I had to be on the freeway for it to vent adequately as well as tilt my head down so the air could go in the vents better and at speed it would buffer in the wind a little, sometimes more. But this defiant is amazingly stable at speed. It truly is designed for naked bikes in a more upright position. And it vents SOOOO much. Better too! I thought ii tt was going to be loud from reviews I read, but it was only slightly louder not bad by any means. Absolutely love this helmet and highly recommend it if you have a bike without fairings and are in a 3/4 or more upright position riding. But I will say I don't care for the shield mechanism at all. And the shield is thinner that the shoei too. December 4, 2015
expensive but good This is my first high end helmet. I like the style, vision out the visor. I first bought the Shoei RF-1200 but exchanged it for this one because the head padding in the Shoei was not fixed and it would move in such a way that it would block the air intake vent holes. The Arai has much better venting and living in the Houston area it is really hot during the day. Couple of things that I don't like: The visor is hard to flip back up once locked down. I usually don't lock it down and just ride with it cracked. The padding around the cheeks is pretty tight. I peeled away the 5mm layers that are designed to come off and they are still tight. We'll see if they break in more over time. I like the chin strap. It doesn't rub or irritate my neck. Then venting is nice, especially the temple vents. Noise level is okay but I've really determined a lot of noise comes from turbulence around you. I ride a suzuki m50 with a screen and if I stand up on my pegs on the highway and put my head in clear air it's amazing how quiet everything gets. The pull down chin thing feature is a joke and does nothing. Arai would have been better off adding a good wind curtain like the rf-1200. Overall its a good helmet. The price is high though. October 19, 2015
2 3 4 5 ... 17 next>>
Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the Arai Defiant Base Helmet? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.