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HJC RPHA 31 Helmet
- P.I.M. (Premium Integrated Matrix Plus) EVO shell
- Areodynamic design generates down force for high stability and less drag
- Ventilation system offers bypass air channel and maximum air intake
- Distortion-free HJ-39 shield provides clear and wide view
- Shield deflector lowers noise level and blocks incoming wind
- Shield holder secures the shield and reduces noise and air drag
- HJ-V12 3-step integrated sunshield is adjustable for optimized position
- Interchangeable cheek pads feature grooves to accommodate eyeglasses
- 2-way pivot ratchet system offers smooth movement and improved sealing
- 2nd generation Smart HJC Bluetooth® ready
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Our Price:
$429.99 - $434.99
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 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 3/4 to 6 7/8 | 21 1/4 to 21 5/8 | 54 to 55 |
| 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 1/4 to 7 3/8 | 22 7/8 to 23 1/4 | 58 to 59 |
| XL | 7 1/2 to 7 5/8 | 23 5/8 to 24 | 60 to 61 |
| XXL | 7 3/4 to 7 7/8 | 24 3/8 to 24 3/4 | 62 to 63 |
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