The HJC F31 remains very good in sound insulation for a jet helmet. It is well-ventilated, and its internal foam helps to limit external noise.

F31 Semi Flat Metallic Blue

£187.81

-19%

£187.81

-19%

F31 Semi Flat Metallic Blue

Q: Is the HJC F31 compatible with an intercom system?

Yes! It is pre-disposed to receive an intercom, allowing you to stay connected or listen to music during your rides.

Q: Can the helmet's interior be removed and washed?

Yes, its Supercool interior is fully removable and washable, practical after a sunny session or several weeks of intensive use.

Q: What size should I choose?

If you already own a helmet, I recommend you stick to the same size. Otherwise, refer to the HJC size guide, which is quite accurate. If you're between sizes, choose the smaller one: the cheekpads will compress slightly over time.

Q: Is the helmet suitable for daily use?

Completely! Lightweight, ventilated, practical: the F31 is perfect for daily urban rides, whether you are on a scooter or motorcycle.

£187.81

Save 19% -19%

Colors

Title

Size guide

International (letters) no US/UK differentiation, helmets sold in head circumference cm - International (letters) no US/UK differentiation, helmets sold in head circumference cm

Head circumference, flexible tape measure ~2.5 cm above the eyebrows

Taille	Tour de tête	≈ Pouces
3XS	50-51 cm	19.69" - 20.08"
2XS	52-53 cm	20.47" - 20.87"
XS	54-55 cm	21.26" - 21.65"
S	55-56 cm	21.65" - 22.05"
M	57-58 cm	22.44" - 22.83"
L	58-59 cm	22.83" - 23.23"
XL	60-61 cm	23.62" - 24.02"
2XL	62-63 cm	24.41" - 24.80"
3XL	64-65 cm	25.20" - 25.59"
4XL	66-67 cm	25.98" - 26.38"
5XL	68-69 cm	26.77" - 27.17"

Size: XS

Size: S

Size: M

Size: L

Size: XL

Size: XXL

In stock - Ready to ship!

Save with our packs:

-13%

F31 Semi Flat Metallic Blue + Kit Bluetooth Smart 11B

£328.31

-15%

F31 Semi Flat Metallic Blue + Kit Bluetooth Smart 11Be

£262.55

-11%

F31 Semi Flat Metallic Blue + Kit Bluetooth Smart 21B Flat Black

£394.07

DESCRIPTION

Urban style, ultimate comfort, and uncompromising safety: the HJC F31 is ready to accompany you on all your rides. Whether you're on a scooter or a motorcycle, it transforms each of your journeys into a pure moment of freedom.

Succeeding the famous FG-Jet, the HJC F31 now features the new ECE 22.06 certification.

The HJC F31 doesn't do things by halves: this open face helmet combines a sleek and modern design with cutting-edge technical features. Its advanced fiber shell, developed with CAD technology, ensures a lightweight and comfortable fit, even during extended rides.

Its large clear anti-UV visor offers excellent visibility while protecting you from external elements, while the retractable internal sun visor is a real plus for bright days.

With its Supercool interior, removable and washable in antibacterial fabric, you stay cool even in summer. The discreet yet effective ventilation system optimizes air circulation. And as always with HJC, the build quality is top-notch, with attention to detail that makes all the difference.

Premium technical features, competitive price, aerodynamic and modern design, the F31 is a full-coverage jet helmet with an advanced composite fiberglass shell, using "CAD" technology to ensure excellent fit, comfort, and lightness.

The F31 comes with a long clear visor with Pinlock ready (high-performance anti-fog film available as an option) and an internal smoked sun visor for added comfort on bright days.

Comfortable, with its antibacterial moisture-wicking and quick-drying fabric interior, fully removable and washable for easy maintenance, it features a high-performance "ACS" ventilation system with 3 top air intakes and a rear air extractor.

Prepared to receive a 2nd Generation Intercom Smart HJC 11B, 21B & 50B Bluetooth (available as an option at iCasque), you can also use your universal Bluetooth communication kit by adding a bracket (available as an option at iCasque) that attaches over the designated area on the helmet.

A complete urban open face helmet with a trendy design, the new HJC F31, certified ECE 22.06, is available in many solid colors and several decorative versions.

Fiberglass shell
Triple shell construction
Integrated sun visor
1,300 g
Pinlock compatible

Comfort

9/10
Equipment

7/10
Lightness

8/10
Protection

6/10

x

Double visor(clear + internal sun visor) for optimal protection in all lighting conditions.
Supercool liner removable and washable, to keep your helmet always clean and fresh.
Lightweight polycarbonate design: guaranteed comfort, even on long rides.
Bluetooth compatible, to easily connect your intercom and ride connected.
ECE 22.06 approved, to ride safely, in the city or the countryside.
Versatile helmet, perfect for urban, suburban use or more relaxed weekend rides for two.

How to choose the right jet helmet?

A good jet helmet strikes a subtle balance between lightweight design, visibility, comfort and safety. Check that the helmet is certified (ECE 22.06 or later) and offers a good field of vision. If you ride often, opt for a model with an integrated sun visorlike the F31, so you won't need sunglasses. Finally, consider the interior comfort (removable/washable) and intercom compatibility if you like to stay connected. And as always: try on your helmet before heading out on an adventure!

To extend the life of your HJC F31, remember to clean the inside by hand regularlywith a little mild soap, especially after periods of intense heat. Clean the visor with a microfiber cloth and warm water (avoid harsh products that could damage the UV protection). To keep your helmet looking like new, store it away from moisture and impactsin its original bag. And don’t forget: a helmet should be replaced after about 5 years of use.

Adult urban jet helmet approved according to the new ECE 22.06 standard

Safety

Material: advanced fiberglass composite shell, continuous fiber matrix, with "CAD" technology for greater lightness, a very good fit and comfort
3 shell sizes
HJ-43 visor, long, clear, fiber, scratch-resistant and 99% UV-resistant treatment. Pre-equipped to receive a Pinlock, high-performance anti-fog film available as an option on iCasque
Two-way visor mounting kit, for smooth movement and improved sealing
ECE 22.06 approval
Chinstrap: micrometric buckle

Comfort

Internal smoked sun visor HJ-V12, multi-level dynamic for an optimized position
Interior: removable and washable lining and cheek pads, in advanced antibacterial fabric for better moisture evacuation and quick drying, anti-odor and anti-perspiration treated
Interchangeable cheek pads in all sizes (available as an option)
Pre-equipped to integrate a Smart HJC 2nd Generation Intercom 11B, 21B & 50B Bluetooth, available as an option
Protection flap for the Smart HJC 2nd generation microphone
Adaptable with your Bluetooth communication kit from any brand, by purchasing the Smart HJC clip-on adapter kit as an option, which attaches over the pre-equipped slot for this purpose
Delivered with its carrying bag
Weight: 1300 gr (+/- 50 gr)

Ventilation

"ACS" (Advanced Channeling Ventilation System) channel ventilation system: allowing heat and moisture to rise and be extracted
Aerodynamic design of the shell and vents
Maximum air intake, 3 air intakes and 1 exhaust vent
Advanced airflow: reduces air drag and generates downward forces

TECHNICAL SPECIFICATIONS

Included helmet accessories	Cover
Bluetooth	Optional
Features (helmet)	Double sunshade, removable interior
Color (primary)	Blue
Visor	Scratch-resistant, Pinlock Ready
Gender	Mixed adult
Homologation	European Standard ECE 22.06
Interior	Removable, washable
Chin strap	Micrometric Loop
Best uses	Extra Urban, Urban
Number of shell sizes	3

Paint style	Uni
Visor tint	Colorless
Shell type	Fibers
Shell type (detail)	Glass fibers
Paint type	Matt
Visor type	Internal
Range	City, Street
Parent range	City, Street