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Klim F4 Geard Helmet
  • Klim F4 Geard Helmet
  • Klim F4 Geard Helmet

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Video Reviews (2)

Klim F4 Geard Helmet Videos

Klim F4 Geard Helmet

In an effort to make one of the most comfortable motorsport helmets on the market even better, Klim has been collecting racer, customer and dealer feedback for improvements on the F4 helmet since its introduction. This newest version has implemented these improvements and the result is a helmet that is even more comfortable and better-fitting than the original F4.

This is the Snell M2010 Rated helmet - ECE Rated helmet also available.

Intake and exhaust ports have been significantly enlarged allowing more air to enter and exit the helmet. The EPS liner shape has been modified in three ways. The cranial shape at the top of the helmet has been altered to allow a better fit on a wider variety of head shapes and also helps keep the helmet positioned correctly. The three large air channels that run laterally through the helmet were already some of the deepest offered in any helmet, but Klim has made them deeper in this version, allowing even more air to pass over the head and out of the helmet. The plenum chamber (inside the EPS) has also had its channels deepened, allowing an overall greater bandwidth of air to pass through the EPS to the rider’s head.

The comfort liner has been completely redesigned to implement the latest technologies in moisture-wicking fabrics. Moisture-wicking foam has strategically-placed perforations allowing a much greater amount of air to pass through the liner while enhancing comfort.

With an unprecedented 41 air-craving intakes, the F4 again establishes the newest standard in helmet ventilation technology. The helmet design is optimized to effectively channel air into the helmet where it is assisted by a network of air-channels in the EPS liner to maximize airflow over the entire head. The result is a dramatically cooler and drier riding experience. 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. Safety standards have been exceeded not only through the use of aerospace materials, but also in design. The F4 exceeds Snell M2010 and U.S. DOT standards.


  • Ram air induction technology with 41 air-craving intakes, the F4 sets a new standard in ventilation technology
  • Non-intrusive eye port increases field of vision
  • Ram air induction scoops not only mine air as it flows over the helmet, but help to increase the structural integrity of the helmet
  • Pressure chamber network liner helps maximize airflow over the head
  • Improved high-volume air channels allow for more air capacity inside the helmet
  • Zonal fiber select construction with aerospace fiberglass, carbon fiber and Kevlar™ ensure a safer helmet
  • Improved included Windstopper liner is small and pocketable, snaps onto foam comfort liner
  • Improved Snell M2010 and U.S. DOT standards
  • Improved moisture-wicking foam liner and liner material


  • Cold weather liner with GORE Windstopper technology
  • Improved removable cheekpads
  • Improved removable comfort liner
  • Breath deflector
  • Deluxe nylon carrying bag
  • Spare visor and visor bolt

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Have a functionality, fit, or otherwise product-specific question about the Klim F4 Geard Helmet? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Klim F4 Geard Helmet
Already Asked: 1 Question, 1 Answer
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A shopper asked: Does this model include the whole winter package you explain in the video? I like the design better than the F4. Thanks. Francisco Jun 23, 2012
Answer this · Send to friends Good question? Yes (0) No (0)
RevZilla: The Klim F4 and the Klim F4 Geard Helmet are exactly the same (aside from the graphic design) and will include the same things in the package. This package includes the following items:

Cold weather liner with GORE Windstopper technology

Improved removable cheekpads

Improved removable comfort line

Breath deflecto

Deluxe nylon carrying bag

Spare visor and visor bolt
Jun 26, 2012
Reply to RevZilla Good answer? Yes (0) No (0)


We highly recommend finding a cloth tape measure and taking the time to take these measurements.  Klim sizes will not necessarily correlate with fitment in other brands.

Klim Helmet Sizing

Hat Size 6 5/8" - 6 3/4" 6 15/16" - 7 3/16" 7 1/4" - 7 3/8" 7 1/2" - 7 5/8" 7 3/4" 7 7/8" 8 3/8"
Head Circumference (In) 20 1/2" - 20 7/8" 21 1/4" - 21 11/16" 22 1/16" - 22 7/16" 22 13/16" - 23 1/4" 23 5/8" - 24" 24 7/16" - 24 13/16" 25 3/16" - 25 5/8"
Head Circumference (Cm) 52 - 53 54 - 55 56 - 57 58 - 59 60 - 61 62- 63 64 - 65

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

Click here to see the full Klim Size Chart
Product Style RevZilla Item # Manufacturer Product # Availability
MD 721172 3306-003-130-000 Out of Stock
LG 721173 3306-003-140-000 Out of Stock
XL 721174 3306-003-150-000 Out of Stock
2XL 721175 3306-003-160-000 Out of Stock
3XL 721176 3306-003-170-000 Out of Stock