F31 Semi Flat Black

£187.81

-19%

£187.81

-19%

F31 Semi Flat Black

Q: Can I install a universal intercom?

Yes, via the Smart HJC adapter kit of the paddle type, available at iCasque.

Q: Is the helmet compatible with glasses?

Yes, the cheekpads are designed to not obstruct the passage of the temples.

Q: Is the Pinlock included?

No, but the visor is Pinlock ready. The high-performance Pinlock film is available as an option.

£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 Black + Kit Bluetooth Smart 11B

£328.31

-15%

F31 Semi Flat Black + Kit Bluetooth Smart 11Be

£262.55

-11%

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

£394.07

DESCRIPTION

HJC F31 Semi Flat Black – The Lightweight and Connected Urban Jet Helmet for Everyday Use

Assertive Style, Optimized Ventilation, and Bluetooth Compatibility: A Helmet Ready to Tackle the City

With the F31, HJC modernizes the urban jet by combining comfort, design, and performance. The successor to the FG-Jet, it adopts the new ECE 22.06 standard to provide enhanced protection without ever compromising on lightness or style. Its Semi Flat Black finish impresses with its sleek elegance, perfect for daily rides with sophistication.

Designed for Urban Riders, Tailored for Long-Term Comfort

Under its composite fiberglass shell, developed with CAD technology, the HJC F31 ensures a perfect fit and a lightweight wear. Its long HJ-43 polycarbonate visor, treated with anti-scratch and anti-UV, guarantees optimal visibility, complemented by the multi-position HJ-V12 sun peak. Whether in summer or winter, the Supercool inner fabric regulates heat and moisture, while the ACS ventilation system ensures efficient air circulation.

And to stay connected even on short trips? The F31 is ready to receive the second-generation HJC Smart Bluetooth intercoms, or a universal system with the optional adapter.

Technical Features:

Shell Material: Continuous matrix composite fiberglass, CAD technology
Visor Type: HJ-43, long, anti-scratch and anti-UV treated, Pinlock compatible
Sun Visor: Internal, HJ-V12 smoked, multi-level dynamic
Closure System: Micrometric buckle
Weight: 1300 gr (+/- 50 gr)
Certification: ECE 22.06

Order the HJC F31 on iCasque – The Perfect Balance of Comfort, Safety, and Urban Style

With the F31, every ride becomes a pleasure. Lightweight, well-ventilated, and ultra-practical, it is ready to follow you everywhere – and turn your daily routine into a playground.

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

ECE 22.06 approval: The latest standard for riding safely
Lightweight fiberglass shell: Strong and comfortable thanks to CAD technology
Dual visor: Clear visibility + sun protection with a retractable smoke visor
Supercool interior: Antibacterial, breathable, and removable for easy cleaning
Bluetooth compatible: Ready for Smart HJC intercoms or universal intercoms with an accessory

Custom fit with 3 shell sizes available
Bold urban design in a semi-matte black finish
All-season comfort thanks to the quick-drying Supercool fabric
High-performance ventilation with 3 air intakes + 1 rear exhaust
Easily connectable with Smart HJC 11B, 21B, 50B or a universal intercom

Hand-clean the interior foam with mild soap. For the exterior, use a soft, damp cloth without abrasive products. Don’t forget to remove the intercom if installed before washing. Store your F31 in its cover to protect it daily.

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
Reflective strips	Included, Mandatory
Bluetooth	Optional
Features (helmet)	Double sun visor, Removable insert
Color (primary)	Black
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