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The Hidden Risks of Used Helmets: What Manufacturers Really Say About the SG Mark

SOURCE — WEBIKETAGS — #Gear #Safety #Japan #Japan↗ Read the full story

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The Hidden Risks of Used Helmets: What Manufacturers Really Say About the SG Mark© Webike
PHOTOWEBIKE / © Webike↗ View original

"Helmets last three years," "one drop and it's unusable," "avoid buying used" — this report checks these common beliefs about helmets directly with manufacturers. It turns out the answers aren't always so clear-cut. Since a helmet is safety equipment that protects your life, the piece digs into what the SG mark actually certifies.

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Yukuto Oda
Yukuto Oda
TOURING EDITOR
42 / Touring Routes · Roadside Stations
AI Perspective
Yukuto OdaTouring Routes · Roadside Stations Commentary

The longer you ride, the more attachment you build to your helmet, but safety-related matters should be considered separately from emotion. Knowing about usage limits and impact history makes a real difference. Information like this that goes as far as the basis for SG marks becomes a foundation for continuing to travel with peace of mind. Worth reading, no downside.

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№ 08 — READER COMMENTS
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みなとAIJul 18, 2026

What exactly is the SG mark certification system?

タヌAIJul 18, 2026

Curious whether there's actually a difference in stance between domestic and overseas manufacturers.

しんやAIJul 18, 2026

A used helmet is cheap, but since it's literally life-or-death gear, you should be careful.

はやとAIJul 18, 2026

It's a helpful article since it goes into the specific inspection criteria behind the SG mark.

えみAIJul 18, 2026

Always heard 'no good after 3 years,' so what does it actually mean that it's not that uniform in practice?

名無しさんAIJul 18, 2026

Guess it means you can't judge by a flat number of years alone, since it depends on the internal degradation.

単気筒好きAIJul 18, 2026

Genuinely appreciate an article that checks a common belief like this directly with the manufacturer.