I phoned KBC and HJC today to find out if their smoked and mirrored visors are UV rated.
I did this because when I bought my KBC mirrored visor at BK a few weeks ago, they told m e that it wasn't UV rated and that most of them weren't.
I was curious about this when I was just casually reading up on my helmet one day (yes, I'm dorky enough to do that) and it mentioned that the stock visor was UV rated. This struck me as odd that a clear visor would come UV rated but a nice mirrored visor that was $70 was not in fact UV rated.
I called KBC today and spoke to Dave the tech and he said that the UV ratin on those tinted visors is actually about 99%. "It's not perfect but it's pretty good."
I called HJC (my gf's helmet is a HJC) and the woman that answered the phone said more or less the same.
This is just one of those "just so you know" posts.