Product Details
The HJC F31 is a lightweight open-face motorcycle helmet designed for commuting, scooter riding, cruisers and relaxed touring. Its slim AFC Advanced Fibreglass Composite shell combines ECE 22.06 protection with a long HJ-43 outer visor, an integrated HJ-V12 sun shield and front-to-back ACS ventilation. This version features the Naby MC1 graphic in Red, White and Black with a gloss finish.
Who is the HJC F31 for?
The F31 is designed for riders who want the broad view and everyday convenience of an open-face helmet without giving up a full-length outer visor, integrated sun protection or modern communication-system preparation. Its extended cheek area, compact profile and micro buckle make it particularly practical for regular urban journeys, commuting and touring.
Protection, visibility and comfort
HJC's CAD-developed AFC shell is designed to balance low weight, comfort and durability. The F31 meets ECE 22.06 and uses a one-touch micro buckle for straightforward fastening.
The clear HJ-43 visor provides 99% UVA and UVB protection, an anti-scratch coating and Pinlock preparation. Its two-way pivot ratchet is designed to improve sealing while maintaining smooth visor movement. Behind it, the anti-fog and anti-scratch HJ-V12 sun shield uses HJC's Dynamic Multi-Step system so its position can be adjusted for comfortable coverage.
Three intake vents and a single exhaust support HJC's Advanced Channeling Ventilation System, moving air from front to back. The moisture-wicking crown and cheek pads are removable and washable, while the helmet is prepared for second-generation SMART HJC communication systems.
Key features
- ECE 22.06 approved open-face motorcycle helmet
- Lightweight AFC Advanced Fibreglass Composite shell
- Slim aerodynamic profile with extended cheek coverage
- Clear HJ-43 visor with 99% UVA and UVB protection
- Anti-scratch, Pinlock-ready visor
- Two-way pivot visor ratchet for smooth movement and improved sealing
- Integrated HJ-V12 sun shield
- Anti-fog and anti-scratch Dynamic Multi-Step sun shield
- Three intake vents and one exhaust vent
- ACS front-to-back ventilation
- Moisture-wicking removable and washable crown and cheek pads
- One-touch micro buckle fastening
- Prepared for SMART HJC 11B, 21B and 50B communication systems
HJC F31 specifications
| Specification | HJC F31 Naby MC1 Red / White / Black |
|---|---|
| Helmet type | Open-face motorcycle helmet with full-length outer visor |
| Approval | ECE 22.06 |
| Shell | AFC Advanced Fibreglass Composite |
| Colour / graphic | Naby MC1 Red / White / Black |
| Outer visor | Clear HJ-43, anti-scratch, Pinlock prepared and 99% UVA / UVB protection |
| Visor mechanism | Two-way pivot ratchet with smooth movement and improved sealing |
| Sun shield | Integrated anti-fog and anti-scratch HJ-V12 Dynamic Multi-Step sun shield |
| Ventilation | ACS with three intake vents and one exhaust vent |
| Interior | Moisture-wicking, removable and washable crown and cheek pads |
| Communication preparation | SMART HJC 11B, 21B and 50B compatible; systems sold separately |
| Fastening | One-touch micro buckle |
| Selectable size range | XS to XXL |
| Warranty | Up to 3 years from purchase or 5 years from manufacture, whichever comes first |
HJC F31 size guide
Measure around the widest part of your head, keeping the tape level just above the eyebrows and ears. Use the measurement as a starting point because head shape and personal fit can vary. A correctly fitted new helmet should feel evenly snug without creating localised pressure points.
| Size | Head circumference |
|---|---|
| XS | 54-55 cm |
| S | 55-56 cm |
| M | 57-58 cm |
| L | 58-59 cm |
| XL | 60-61 cm |
| XXL | 62-64 cm |
This HJC F31 listing offers selectable variants from XS to XXL. Check the size selector for current availability. If you are between sizes or would like help checking the fit, visit the Moto Central showroom in Wolvey. Our team can assess security, pressure points and unwanted movement before you ride.
What is supplied?
- HJC F31 Naby MC1 Red / White / Black Open-Face Motorcycle Helmet
- Clear HJC HJ-43 outer visor
- Integrated HJC HJ-V12 sun shield
A Pinlock insert and SMART HJC communication system are not listed as included.
Compatible optional accessories
- Pinlock 70 MaxVision DKS531 anti-fog insert for the HJ-43 visor
- HJC HJ-43 and HJ-43 RST replacement visors specified for the F31
- HJC HJ-V12 replacement sun shields
- SMART HJC 11B, 21B and 50B communication systems
All optional accessories are sold separately. Check the exact F31 or HJ-43 compatibility before ordering.
HJC F31 questions
Is the HJC F31 ECE 22.06 approved?
Yes. The F31 is certified to ECE 22.06.
Is a Pinlock insert included?
No Pinlock insert is listed as supplied with these helmets. The HJ-43 visor is prepared for the optional Pinlock 70 MaxVision DKS531 insert.
Does the F31 have an internal sun shield?
Yes. The integrated HJ-V12 sun shield has HJC's Dynamic Multi-Step adjustment and anti-fog and anti-scratch coatings.
What fastening system does the F31 use?
The F31 uses a one-touch micro buckle.
Can an intercom be fitted?
Yes. The helmet is prepared for SMART HJC 11B, 21B and 50B systems, which are optional and sold separately.
Can the lining be washed?
Yes. The crown pad and cheek pads are removable and washable. Follow HJC's care instructions and allow the components to dry naturally before refitting them.
HJC F31 product video
Motorcycle helmet fitting videos
Correct sizing is only the starting point. These Moto Central videos explain how a new motorcycle helmet should fit and how to check that the helmet shape suits your head. For hands-on help, visit Moto Central in Wolvey for professional helmet fitting guidance.