How often should you replace a motorcycle helmet?

About every five years from when you start using it, per Snell Memorial Foundation guidance. Sweat, UV, and liner compression degrade protection even without a crash.

Do I need to replace my helmet after dropping it?

A hard drop onto concrete with your head inside is a crash — replace it. An empty helmet tipping off a seat is generally not enough to damage the EPS liner, though manufacturers are conservative. When in doubt, replace.

How do I know my helmet is worn out?

It moves on your head when it used to be snug, the liner is visibly compressed or crumbling, the shell has cracks or deep scratches, or the strap/D-rings no longer hold firmly.

When to Replace a Motorcycle Helmet

Helmets are single-use safety equipment with an expiration date.

⚠️ The non-negotiable rule. Any crash with your head inside the helmet = replace the helmet, even if it looks fine. The EPS foam liner crushes once to absorb impact; it doesn't bounce back.

The 5-year rule

The Snell Memorial Foundation recommends replacing a helmet about five years after you start using it — not five years from manufacture. Sweat, skin oils, UV exposure, and the constant compression of wearing it all degrade the liner and shell over time, even with zero crashes.

A helmet that sat in its box for two years before you bought it isn't "two years old" in the way that matters — but check the manufacture date anyway, and be skeptical of "new old stock" at deep discounts.

Replace it now if…

You crashed in it. Any impact with your head inside — even a low-speed tip-over. Hairline shell cracks and crushed foam aren't always visible.
It's loose when it used to be snug. A compressed liner that lets the helmet move on your head has lost its job. New cheek pads can buy time, but a worn crown liner means replacement.
The liner is crumbling or flaking. Old comfort liners disintegrate. If foam bits come off on your head, it's done.
Shell damage. Cracks, deep gouges through the clear coat into the shell, or delamination. Surface scratches from normal use are cosmetic; cracks are not.
Strap or buckle problems. D-rings that slip, a frayed strap, or a quick-release that doesn't hold firmly.
It's past five years of use. Even if it looks perfect.

What about dropping it?

Honest answer: it depends on the drop. An empty helmet tipping off a seat onto concrete almost certainly didn't damage the EPS — the foam is designed to crush under the weight of your head decelerating, not under the helmet's own weight. Manufacturers stay conservative here because they can't inspect your helmet remotely.

A drop from waist height or higher onto a hard surface, or any drop with your head inside, should be treated as an impact: replace it. When in doubt, replacing a $200–$600 helmet is cheap compared to the alternative.

Make the next one last

Store it out of direct sun and away from fuel/solvent fumes (garage shelving near the gas can is a bad spot).
Use the helmet bag it came with.
Wash the removable liner per the manual — sweat-soaked liners degrade faster and stink.

Need a new one? Start with the helmet size finder.

Gear to buy it right: Replacement helmets

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