Check this out Guys
just browsing around and found this picture/story of the kid who hit a post with his head at 100+ (wearing an ARAI) and walked away ok. The picture is of an ARAI helmet that was "crushed" on the side where the post hit, looks like a big dent.
http://www.araiamericas.com/news.asp...le_current.asp
This is one reason I hate Chinese helmets..they will fail you in a similar situation.