>>28568252
literally every bit of safety gear "expires" after ~5 years. Race car harnesses, racing seats, helmets, pads, baby car seats, EVERYTHING "expires", and race orgs won't let you run it because it's "expired". Does it actually suddenly stop working? No, but they want to avoid liability if you die while using their shit. They also want you to keep replacing your perfectly good gear because it's how they stay in business.
convince the consumer his helmet isn't safe anymore and he'll be more than willing to shell out another $500+ to be safe. What's $500 compared to your life, right?