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Discontinued Product!

The Arai Signet-Q Tropic Frost Helmet
has been discontinued and will not be returning
Replacement Suggestion:
Arai Closeouts
Out of Stock
Arai Signet-Q Tropic Frost Helmet
  • Arai Signet-Q Tropic Frost Helmet - Black/White/Red

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Video Reviews (3)

Arai Signet-Q Tropic Frost Helmet Videos

Shape: Long Oval

Weight: 3.60 lbs

What's this?

Arai Signet-Q Tropic Frost Helmet

The Arai Signet-Q (the long-oval shaped cousin to the RX-Q) is the product of a racing lineage going back to the late 1970’s. Since Arai’s inception, their RX Line of helmets has set an international standard for rider comfort and safety. The Signet-Q is perfection incarnate, blending modern materials and safety features with decades of knowledge and racing heritage. The result are features like an eyeport designed to maximize peripheral vision, an aerodynamically tuned outer shell and a beautifully crafted and ultra comfortable liner. All these features, combined with industry-leading protection, provide riders with an unmatched level of safety and comfort.

A longer shell shape on the Arai Signet-Q Helmet gives 5mm more space front to back allowing for a larger number of heads to fit comfortably. The shape of the Arai Signet-Q Helmet releases forehead pressures and eliminate hot spots for a more comfortable fit every time.  This shape works best for riders with a long oval headshape.


  • Both the top vent set and side exhaust cowls are direct carryovers from the RX-Q 
  • Brow vent ducting redirects to flow air across the temples
  • DDL-4 exhaust vent to the 10mm wider eye port (5mm on each side)
  • Long Oval Fit
  • SAI "MAX-Vision Brow Vent" shield
  • Clear Pinlock Max-Vision Brow Vent Pinlock lens included
  • Elongated shell adds 5mm from front to back
  • Long-Oval shape helps prevent “Hot-Spot”
  • Multi-Density Single piece EPS liner
  • Removable, replaceable, washable interior
  • Dry-Cool Surface material for rapid displacement of heat and moisture away from your head and into the ventilation airflow for added comfort while riding and a quick dry between rides
  • 5mm peel-away temple pads adds another level of customization, giving the helmet interior a little extra width when needed
  • Enhanced for customizable micro fitment interior without the need to purchase extra interior components
  • New FCS (Facial Contour Support) cheek pad design
  • Innovative and exclusive spring support adds just the right amount of pressure when needed while being worn
  • Meets or exceeds Snell and D.O.T. standards

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
Black/White/Red / XS 869299 817280 Out of Stock
Black/White/Red / SM 869300 817281 Out of Stock
Black/White/Red / MD 869301 817282 Out of Stock
Black/White/Red / LG 869302 817283 Out of Stock
Black/White/Red / XL 869303 817284 Out of Stock
Black/White/Red / 2XL 869304 817285 Out of Stock


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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.

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Arai Signet-Q Tropic Frost Helmet 4.8 5 329 329
Amazing helmet This helmet is amazing, I have owned high end Shoei, HJC, and Suomy helmets all nice but not as good as the Arai. The first time I tried it on was the second day of a 2 day track weekend at NCM, when I put the helmet on and put the visor down (dark smoke) I had to tap the visor to make sure it was on, thats how clear it was. The helmet fit so well and felt so light it didn't even feel as if I wasn't even wearing one. Will never buy another brand. May 17, 2016
A very good overall helmet. I have never had a top of the line helmet before but you can definitely tell the difference in the quality. The size was right on and the venting is nice. The cheek pads for me was snug but was able to remove the 5mm inner liner to make it fit better. I also added the SENA 10S into the helmet and really like it. May 17, 2016
must for long oval this is the 3rd helmet I've tried and I've finally found the one. fits great, flows good air. might be a little expensive, but i will allow it for the comfort I've finally found. May 4, 2016
Aria helmets are worth the money This is the fifth Arai helmet that I have purchased in 20 years. The key reason for purchasing the helmet is that Arai makes many shapes and you can find one that fits without creating pressure spots on the forehead or temples. Plenty of venting so there is good airflow while moving and with that much experience with Aria helmets visibility is not an issue. The Pinlock visor is a big plus. May 3, 2016
Fits Great I had a Schuberth but my long oval head felt like it was getting crushed after 20 minutes. On a warm day it was terrible. The Arai although expensive is worth every penny just for the comfort alone. There is more wind noise than I expected but earplugs solve that. The flip up visor actually works very well. May 3, 2016
This helmet lives up to everything that is said about it For myself, I have always had to due minor surgery on every helmet I ever had. I did so, to get a fit that that I could live with as far as comfort. I absolutely love this helmet. The fit is excellent. It is quiet. You can see out of it very good, and it looks great. I purchased the Black Diamond color and it matches my black Limited Harley as was expected. Black is Black. The only negative is not the helmet, the free freight took almost ten days to arrive. I can live with that. Revzilla seems to be a excellent store to purchase from. Head size is 24 In. Extra Large fits fine. April 28, 2016
4 years and still loving it I bought this helmet 4 years ago and still love it. Little more noise than my Shoei R1000, however fit and weight all make up for it. April 26, 2016
Perfect for long oval head shape I already owned a diamond white Arai Signet-Q, and I wanted one in hi-viz yellow. This helmet is a perfect fit for those with a long oval head shape. For me, it's the most comfortable helmet I have ever had. Plus, the face shield never fogs up. And I like when I turn my head (while riding) that the wind doesn't "grab" the helmet. Excellent design! Highly recommended! And Revzilla's shipping was lightning fast! April 26, 2016
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