I don't know if they tell us that just to sell more helmets, but I'm fully convinced there is no such thing as a shelf life for a helmet. That's not to say there aren't good reasons for replacing a helmet in general, like wear and weathering to the shell / visor / pivot points, advances in features and tech. Personally I wouldn't buy a used helmet because it's tough to tell if it took a drop that could have compressed that foam. And yes there are people and curricula that will tell you a helmet lasts only 2-4 years, even the MSF: https://smarter-usa.org/wp-content/uploads/2017/06/26321_MSF.pdf I was a RiderCoach myself, and I think that is so dumb. Could you imagine paying $300+ every two years to replace a good helmet with no damage? That's more than than the depreciation my bike has taken while I've owned it. I'm interested to see the legal reasoning presented for compensation based on helmet age. To me that doesn't make a ton of sense, but a lot of questionable logic has factored into judgments in the past.
Fox
The foam really doesn't degrade with age, that's a myth. It's basically the same material as Styrofoam.
Definitely replace if it's been crashed in and took a hit. If you're unsure, some of the fancier Japanese brands will inspect a helmet to tell you whether it's still good to use.
An older helmet is WAY better than no helmet. I would take a 20 year old full face helmet over a brand new half helmet in a crash. I like my face.
Beavis teaches typing would probably be a riot
Sprinkles? That looks like my sink after I shave
Total joke of a government
Very definitely not, emails (and texts and a bunch of other electronic comms) are discoverable as evidence and routinely used to bury people under the jail
Woodland critter noises 😄
Ah ok, I'm totally ignorant and haven't seen that
Ruby Ridge was a real life event where the ATF set up and pretextually attacked a family in Idaho
I hope this email finds you before I do