HJC
HJC i31 Semi Flat Metallic Blue
The HJC i31 Semi Flat Metallic Blue Open-Face Motorcycle Helmet combines modern urban styling with a lightweight APC shell, a full-length HJ-43 outer visor and an integrated dark smoke sun shield. This distinctive metallic blue finish colourway shares the i31 model family's ECE 22.06-approved construction and practical everyday features.
Who Is It For?
The HJC i31 is designed for commuters, touring riders and urban motorcyclists who prefer the open feel and wide field of view of a jet helmet but still want a substantial outer visor, integrated sun protection and a washable comfort lining.
Key Benefits
- ECE 22.06 approved: Current European motorcycle helmet certification for road use.
- APC shell: HJC's Advanced Polycarbonate Compound balances strength, impact resistance and manageable weight.
- HJ-43 outer visor: Pinlock-ready, anti-scratch coated and designed to block 99% of UV light.
- Adjustable HJ-V12 sun shield: The installed dark smoke shield offers improved peripheral coverage and can extend by 5 mm.
- ACS ventilation: Front-to-back airflow helps move heat and humidity out of the helmet.
- Comfort-focused interior: Moisture-wicking, quick-drying crown and cheek pads are removable and washable.
- Eyewear-friendly fit: Glasses grooves help accommodate riders who wear spectacles.
Specifications
| Specification | Details |
|---|---|
| Helmet type | Open-face / jet motorcycle helmet |
| Colour | Semi Flat Metallic Blue |
| Approval | ECE 22.06 |
| Shell | Advanced Polycarbonate Compound (APC) |
| Ventilation | ACS Advanced Channeling Ventilation System with front-to-back airflow |
| Outer visor | HJ-43 Pinlock-ready visor with 99% UV protection, anti-scratch coating and locking system |
| Sun shield | Integrated dark smoke HJ-V12 sun shield with anti-fog and anti-scratch coatings |
| Interior | Moisture-wicking, quick-drying lining with removable and washable crown and cheek pads |
| Eyewear | Integrated glasses grooves |
| Fastener | Micro buckle |
| Sizes | XS to XXL |
| Warranty | Up to 3 years from purchase or 5 years from manufacture, whichever comes first |
HJC i31 Size Guide
Measure around the widest part of your head, keeping the tape level just above the eyebrows and ears. Use the circumference as a starting point, then check that the helmet is secure without creating painful pressure points. Head shape can affect fit even when the measurement is correct.
| XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| 54-55 cm | 55-56 cm | 57-58 cm | 58-59 cm | 60-61 cm | 63-64 cm |
What Is Supplied?
- HJC i31 helmet in Semi Flat Metallic Blue
- HJ-43 Pinlock-ready outer visor
- Installed dark smoke HJ-V12 internal sun shield
Optional Accessories
A compatible Pinlock anti-fog insert for the HJ-43 visor is available separately. Always check the visor model before ordering an insert or replacement visor.
HJC i31 Questions and Answers
Is the HJC i31 road legal in the UK?
Yes. The HJC i31 is ECE 22.06 approved for road use.
Does the HJC i31 include a sun visor?
Yes. A dark smoke HJ-V12 sun shield is installed inside the helmet and can be adjusted for additional coverage.
Is a Pinlock insert included?
No Pinlock insert is stated as supplied with this helmet. The HJ-43 outer visor is Pinlock-ready and a compatible insert is available separately.
Can the lining be washed?
Yes. The crown pad and cheek pads are removable and washable.
Is the i31 suitable for glasses?
Yes. HJC includes glasses grooves in the interior, although comfort will also depend on the frames and individual fit.
Moto Central Helmet Fitting Guidance
A size chart is only the starting point. If you are unsure about sizing or head shape, visit the Moto Central showroom for practical fitting advice. Our team can help assess overall security, pressure points and whether the i31 suits your head shape.
Videos
Watch Moto Central's helmet-fitting and head-shape guides before choosing your size: