How To Size and Buy a Motorcycle Helmet

Introduction

Spurgeon here with Pro Bike Guard to welcome you to how to size and buy a motorcycle helmet. In this article, we will walk you through the different types of motorcycle helmets available and help you determine the correct shape and size to work with your head.

 

Types of Motorcycle Helmets

There are a wide variety of great helmets across all price points. A helmet’s price point can affect how comfortable, quiet, ventilated, or lightweight it is, but it doesn’t necessarily affect its safety. Every helmet discussed will carry a Department of Transportation (DOT) sticker, which means it’s legal for street use in the United States. You might see other safety ratings like Snell or ECE, but we won’t cover those here. Regardless of the helmet price point or safety rating, all the sizing information in this guide will apply to all helmets.

 

Open Face Helmets

The first type to consider is the open face helmet. Open face helmets are available in two different styles:

  • Three-Quarter Design: Adds additional protection down around the side of your head.
  • Half Helmet Design: Only protects the very top of your head.

 

Benefits of Open Face Helmets:

  • Excellent ventilation
  • Easy to get on and off
  • Less restrictive feel

 

Drawbacks of Open Face Helmets:

  • No protection for your face or eyes
  • No protection from the elements (e.g., rain or cold)

 

Full Face Helmets

The full-face helmet is probably the most typical helmet you’ll see on the street and the only type you’ll see at the racetrack.

 

Benefits of Full Face Helmets:

  • Added protection with a chin bar
  • Built-in face shield to protect your eyes
  • Quieter than open face helmets

 

Drawbacks of Full Face Helmets:

  • Harder to get on and off
  • Can be uncomfortable if not fitted correctly

 

 

Modular Helmets

Modular helmets have become popular with touring and commuting riders.

 

Benefits of Modular Helmets:

  • Chin bar can open for easier on and off
  • Ability to eat, drink, or have conversations without removing the helmet

 

Drawbacks of Modular Helmets:

  • Heavier and noisier than traditional full face helmets
  • Chin bar can be a potential point of failure during a crash

 

Note: Modular helmets are not designed to be worn in the open position while riding.

 

ADV (Adventure) Helmets

ADV or adventure helmets are designed for riders on and off the road.

 

Benefits of ADV Helmets:

  • More comfortable and quieter than dirt bike helmets
  • Can be used with goggles
  • Safety-rated for on and off road use

 

Drawbacks of ADV Helmets:

  • Heavier than dirt bike helmets
  • Not as well ventilated as dirt bike helmets
  • Peak can cause lift at high speeds

 

Dirt Bike Helmets

Dirt bike helmets are designed specifically for off-road riding.

 

Benefits of Dirt Bike Helmets:

  • Excellent ventilation
  • Lightweight
  • Easy to clean and maintain

 

Drawbacks of Dirt Bike Helmets:

  • May not be DOT-rated (not street legal)
  • No protection from the elements
  • Can be noisy, and the peak can cause lift at high speeds

 

Determining Your Head Shape

Once you’ve chosen the type of helmet, the next step is to determine your internal head shape.

While helmets might look identical on the outside, they can have different internal fits:

  • Round Oval: Shorter front to back with more room at the sides
  • Intermediate Oval: Slightly longer front to back and narrower at the sides (most common in the American market)
  • Long Oval: Long front to back and narrow at the temple

Tip: Have a friend take a picture of the top of your head to help determine your head shape. If you have hair, flatten it down as much as possible for an accurate assessment.

 

Matching Your Head Shape with Helmets

On Pro Bike Guard’s product pages, you’ll find icons indicating the internal fit of each helmet. Use these icons to refine your search and shop for helmets that match your head shape.

Note: If you are choosing between two head shapes, the intermediate oval is the most popular shape for the American market.

 

Choosing the Correct Size

After determining the style and shape, the final step is to choose the correct size.

 

Here’s how to do it:

  1. Use a Soft Tape Measure: Have a trusted friend stand behind you and measure around the crown of your head.
  2. Refer to the Manufacturer’s Size Chart: Match your measurement with the size chart on the product page. Different manufacturers use different size charts, so always refer to the specific chart for the helmet you’re considering.

Tip: Pro Bike Guards will note this on the product page ant video if certain helmets run larger or smaller.

 

Testing Your Helmet Fit

Once your helmet arrives, wear it around the house before riding. Watch TV, do some chores—just don’t ride until you’re sure it fits.

 

Proper Fit Indicators:

  • Snug Fit Around the Crown: No uncomfortable pressure points.
  • Full-face Design: The cheek pads should be snug, giving you “chipmunk cheeks.” You shouldn’t be able to comfortably chew gum.

If the helmet feels comfortable after an hour, it’s a good fit. If not, contact Pro Bike Guard’s customer service for assistance with returns or exchanges.

 

Customer Support

Pro Bike Guard’s gear experts are avid motorcyclists trained to help you find the right gear. If you have any questions, We’re here to ensure you get the right style, shape, and size while considering safety and budget.

 

FAQs

What’s the difference between DOT, Snell, and ECE ratings?

DOT is the minimum safety standard for street use in the U.S. Snell and ECE are additional ratings that often indicate more rigorous testing.

How do I know my head shape for a helmet?

Have a friend take a picture of the top of your head and match it with the internal fit icons on Pro Bike guard’s product pages.

Can I ride with a modular helmet in the open position?

No, modular helmets are not designed for riding with the chin bar open.

What is the most common head shape for helmets in the U.S.?

The intermediate oval shape is the most popular head shape in the American market.

How long should I wear a new helmet before deciding if it fits?

Wear it for about an hour around the house. If it feels comfortable after this time, it’s a good fit.

 

Conclusion

Hopefully, you know how to correctly size and buy a motorcycle helmet. Thank you for joining us for this motorcycle helmet sizing guide. Ride safely and enjoy the ride!