Arai Signet-Q Basilisk Helmet
The Signet-Q takes all the favorite features of the RX-Q and create a whole new series based on all the successes. On the outside, the Arai Signet-Q Helmet looks very similar to it's namesake, the RX-Q, but on the inside you can see and feel the difference. 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.
Additional Features of the Arai Signet-Q Helmet
Have a functionality, fit, or otherwise product-specific question about the Arai Signet-Q Basilisk Helmet? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.


Wrap a cloth measuring tape around your head just above your eyebrows. Pull the tape comfortably snug, and read the length.
| Size | Head (in) | Head (cm) |
|---|---|---|
| 2XS | 20 - 20 1/2 | 51 - 52 |
| XS | 20 7/8 - 21 1/4 | 53 - 54 |
| SM | 21 5/8 - 22 | 55 - 56 |
| MD | 22 1/2 - 22 7/8 | 57 - 58 |
| LG | 23 1/4 - 23 5/8 | 59 - 60 |
| XL | 24 - 24 3/8 | 61 - 62 |
| 2XL | 24 3/4 - 25 1/8 | 63 - 64 |
| 3XL | 25 1/2 - 26 | 65 - 66 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit.
Click here to see the full Arai Helmets Size Chart
| Product Style | RevZilla SKU ID | Manufacturer Product # | Availability |
|---|---|---|---|
| Black/White/Red / XS | 869293 | 817270 | In Stock: Ships next business day |
| Black/White/Red / SM | 869294 | 817271 | In Stock: Ships next business day |
| Black/White/Red / MD | 869295 | 817272 | In Stock: Ships next business day |
| Black/White/Red / LG | 869296 | 817273 | In Stock: Ships next business day |
| Black/White/Red / XL | 869297 | 817274 | In Stock: Ships next business day |
| Black/White/Red / 2XL | 869298 | 817275 | In Stock: Ships next business day |