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Klim F4 Helmet

Klim F4 Helmet

Normally $749.95, on sale now for $500


The Klim F4 helmet is a perfect choice for all off-road, and dirt bike riding.

The F4 has been engineered with Moisture-wicking foam and strategically-placed perforations allowing a much greater amount of air to pass through the liner while enhancing comfort.  Klim® also includes a snap-in breath deflector with every F4 making it a true four-season, multi-sport helmet.

The F4 is built on a fiberglass, carbon fiber and kevlar construction to ensure premium safety standards are exceeded.

The pocketable windstopper liner can be snapped onto the comfort liner in colder weather, which will still allow moisture to be moved away from the head while preventing air from directly contacting the head.


  • Most advanced ventilation system:
    • Air induction system supports air-craving intakes to deliver substantial air-flow and volume into ventilation system 
    • EPS air channels continuously introduce fresh air to inner pressure chamber network and transport heated air and excess moisture to exit ports.
    • Large, effective exit ports

  • Premium construction and quality:
    • Zonal fiber select construction with aerospace fiberglass, carbon fiber and kevlar® to ensure a safer helmet.
  • Moisture-wicking comfort liner and cheek pads integrates with ventilation system and enhances cooling via airflow perforations
  • Non-intrusive eye port increases field of vision
  • Air-induction exterior ridges increase structural integrity of the helmet 
  • Patent D583, 102
  • All-weather system and comfort features 
  • Replacement parts available

  • Included:
    • Windstopper® snap-in liner. The liner is small and pocketable, and snaps onto the foam comfort liner to provide windproof warmth while still maintaining incredible breathability and moisture removal.
    • Adjustable snap-in breath deflector
    • Removable comfort liner and cheek pads, easily removable and washable.
    • Carry Bag:  Each helmet comes with a deluxe, soft-lined, ballistic nylon carrying bag with external zippered side pockets and end mesh stash pocket

Klim F4 Helmet