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HJC F31 Helmet

Enjoy lightweight protection and a comfortable fit in the HJC F31 helmet. This touring lid features an Advanced Fiberglass Composite Shell that was designed using CAD technology, so you know that no detail was spared when it comes to aerodynamics. Equipped with a Pinlock-ready HJ-43 face shield and an integrated dark smoke HJ-V12 sun shield, the F31 helmet provides clear visibility and adaptability to changing light conditions.

The ACS Advanced Channeling Ventilation System features three intakes and one exhaust vent for airflow that keeps your dome cool. Inside, the moisture-wicking, quick-dry interior offers comfort and removable cheek pads are not only washable, but interchangeable for a dialed in fit. Finally, the F31 helmet is Smart HJC ready, making the integration of a 50B, 21B or 11B Bluetooth communication system seamless.

Shell:

  • Advanced Fiberglass Composite shell
  • Designed using CAD technology for lightweight, superior comfort and fit

Ventilation:

  • Advanced Channeling Ventilation System (ACS) - Full front-to-back airflow flushes heat and humidity out of the helmet
  • Three intakes and one exhaust port

Shield:

  • Clear Pinlock-Ready HJ-43 face shield included (lens sold separately)
  • Provides 99% UV protection
  • Anti-Scratch coated
  • Two-way pivot ratchet for smooth movement and improved sealing
  • HJ-V12 dark smoke inner sun shield included

Interior:

  • Moisture-wicking, quick-drying performance interior
  • Crown and cheek pads are removable & washable
  • Interchangeable cheek pads between all sizes

Bluetooth Compatibility:

  • Smart HJC ready, designed to seamlessly integrate with the 50B, 21B and 11B Bluetooth communication systems (sold separately)

Safety:

  • Double D-ring closure
  • DOT approved
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HJC Helmet Sizing

Size Head (cm)
3XS 50-51
2XS 52-53
XS 54-55
SM 55-56
MD 57-58
LG 58-59
XL 60-61
2XL 62-63
3XL 64-65
4XL 66-67
5XL 68-69

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
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