HJC i91 Carst Helmet
The HJC i91 Helmet is constructed from a polycarbonate composite shell with high performance air circulation. Three shell sizes provide a better fit while removable and washable cheek pads keep every ride fresh. A dynamic HJ-V12 sun visor eliminates the need for sunglasses.
- Polycarbonate Composite Shell
- 3 shell sizes
- Slim and sleek front view
- High performance enhanced air circulation
- HJ-33 Pinlock prepared shield
- Dynamic multi-step HJ-V12 sun visor
- Double D-ring with retention strap
- SMART HJC Bluetooth Ready
- Removable/washable cheek pads
Share this page on Twitter!
View Larger Images
Sizing Information
Below is a size chart provided by HJC for this product. If you need help with how to measure, or how to evaluate the fit of a helmet please have a look at this guide by HJC (the size chart included in this guide is for a “generic” HJC helmet and may differ slightly from the chart below that is specific to this product).
If you have questions about how this helmet might fit as compared to other helmets in your closet, please visit this FAQ for some advice.
| Helmet Size | Hat Size | Head Measurement (inches) | Head Measurement (cm) |
|---|---|---|---|
| XS | 6 5/8 to 6 3/4 | 20 7/8 to 21 1/4 | 53 to 54 |
| Small | 6 7/8 to 7 | 21 5/8 to 22 | 55 to 56 |
| Medium | 7 1/8 to 7 1/4 | 22 1/2 to 22 7/8 | 57 to 58 |
| Large | 7 3/8 to 7 1/2 | 23 1/4 to 23 5/8 | 59 to 60 |
| XL | 7 5/8 to 7 3/4 | 24 to 24 3/8 | 61 to 62 |
| XXL | 7 7/8 to 8 | 24 3/4 to 25 1/4 | 63 to 64 |
Other Useful HJC Information Links:
Need help choosing the right shape and size helmet for your own noggin?
Learn about the LidPicker!
