Replace your motorcycle helmet after any crash or hard impact, when it no longer fits snugly, or when the shell, liner or strap is damaged. If none of that happens, a common guideline is about five years from first use. The Snell Memorial Foundation's FAQ recommends replacing a helmet roughly every five years for this reason.
Condition matters more than the calendar. A helmet that's taken a hard hit last week needs replacing more urgently than a well-kept one that's four years old.
Replace it after a crash or hard impact
The foam liner inside the shell (EPS) protects you by crushing during an impact. Once it's crushed, it doesn't spring back, and the damage is often invisible from outside. That's why a helmet that "looks fine" after a crash may not protect you properly next time.
The same can apply to a heavy drop onto a hard surface, especially with your head inside or from a height. Our guides on replacing a helmet after a crash and whether a dropped helmet must be replaced go into detail.
Replace it when the fit is no longer secure
The comfort padding compresses over time. A helmet that was snug when new can become loose after a couple of years of regular use. Signs it's time:
- It moves when you shake your head with the strap fastened.
- It fails the roll-off check.
- The cheek pads no longer press on your cheeks.
- It lifts or buffets more at speed than it used to.
Sometimes new cheek pads or a new liner restore the fit, if the manufacturer offers them. If not, it's time for a new helmet.
Visible signs it's time
- Cracks, deep gouges or soft spots in the shell.
- Foam liner that's cracked, dented or crumbling.
- A strap that's frayed, or a buckle that doesn't latch securely.
- Visor mechanism or chin bar latch that's broken and can't be repaired with official parts.
- Damage from solvents, fuel, paint or heat.
Why age still matters
Even without a crash, materials age. Sweat, hair oils, UV light, heat and cleaning products all affect the liner, padding and glue over time. Five years is a general rule rather than a hard expiry date, but if your helmet is getting old and also shows any of the signs above, replace it.
Make your helmet last
- Store it somewhere cool and dry, out of direct sun.
- Don't hang it on your mirror or handlebar, which can dent the liner.
- Clean it with mild soap and water only. Check what not to use on a helmet.
- Let the liner dry fully after wet or sweaty rides.
A quick replacement checklist
- Has it been in a crash or taken a hard hit? Replace it.
- Does it move on your head with the strap fastened? Replace pads or the helmet.
- Is the shell, liner or strap damaged? Replace it.
- Is it around five years old? Plan to replace it soon.
FAQ
Do helmets expire?
There's no legal expiry date, but most experts suggest replacing a helmet around every five years.
Should I buy a used helmet?
It's risky, because you can't know its history. See whether you should trust a used helmet.
Can I replace just the padding?
Often, yes, if the manufacturer sells replacement pads. That can fix a loose fit, but not impact damage.
Does a helmet that sits on a shelf still age?
More slowly than one in daily use, but materials still age. Store it well and inspect it before use.
