Just1 J40 Motocross Helmet - Flash - Medium

The Just1 J40 Flash Motocross Helmet is designed for competitive riders seeking the perfect balanc...

Best current price£124.60from OnBuy.com

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OnBuy.com(M) Just1 J40 Motocross Helmet Flash Fluo Green / White / Black White,Green,Black 8056893363960
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£124.60
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GhostBikes.comJust1 Green/White/Black J40 Flash Motocross Helmet M Matt Fluo
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£149.99
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Product Information

Full details

The Just1 J40 Flash Motocross Helmet is designed for competitive adult riders who prioritize both high-impact safety and ventilation during intense off-road riding. It delivers professional-grade protection through its advanced ABS shell and peak release system, though users should be aware that the aggressive ventilation design may result in increased wind noise compared to touring-specific helmets.

All features

Age Groupadult
ColourMulticolor
GenderUnisex
Model Part NumberJUS412M
BrandJust1

Extended Product Information

FAQs

What safety standard does the J40 meet?

The Just1 J40 meets the ECE 22/06 certification, which is the latest and most stringent standard for impact protection.

Is the inner lining removable?

Yes, the entire inner lining is fully removable and washable, allowing you to keep the helmet interior clean.

How do I secure the retention system?

The J40 uses a double-D ring system. Thread the strap through both rings and back through the inner ring to lock it securely.

What is the peak release system for?

The peak is designed to break away during an impact, which helps reduce rotational forces that could otherwise affect your head and neck.

How many vents does this helmet have?

The helmet features an integrated ventilation system with 5 intake vents and 6 exhaust vents for optimal airflow.

What material is the shell made of?

The helmet is constructed from a high-strength ABS shell designed for durability and impact resistance.

Troubleshooting

Helmet feels loose during riding

Re-adjust the double-D ring strap to ensure it is snug against your chin. If the padding has compressed over time, consider if the liner needs a deep clean or if a new liner set is required.

Ventilation feels blocked

Inspect all 5 intake and 6 exhaust vents for mud, dirt, or debris buildup. Use a soft brush or compressed air to clear obstructions.

Liner smells or shows moisture buildup

Remove the interior lining and wash according to the manufacturer instructions. Ensure the helmet is stored in a well-ventilated area to allow the inner foam to dry fully after each ride.

Pros and Cons

Pros

  • Meets the latest ECE 22/06 safety standards
  • Excellent airflow management with 11 total vents
  • Removable and washable interior lining simplifies maintenance
  • Specialized peak design aids in rotational force reduction
  • Antimicrobial liner material keeps the helmet fresh

Cons

  • High ventilation count can lead to increased wind noise
  • Available only in adult sizes
  • Requires regular washing of the inner liner for optimal hygiene

Setup, Compatibility & Care

To ensure maximum safety, always verify the fit by ensuring the helmet sits squarely on your head; it should be snug but comfortable, with no pressure points. Use the double-D ring closure by threading the strap through both rings and doubling back through the first, ensuring it is tight enough that you cannot pull the helmet off your head.

For care, the inner liner is fully removable. Periodically unclip the liner and wash it using a mild soap and cold water to ensure the Protx2 technology continues to function effectively. Always allow the padding to air dry completely before re-installation to prevent moisture buildup within the shell.

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