??? Why would it be dangerous for Motorbike helmets if Snowmobile helmets have them standard...???
I'm guessing it would be like the demister on your cars rear window... even after having the demister on for a couple hours the window is still reasonably cold...
HJC, CANAM, Arai and Shoei have the electric sheild replacement visor.
Here's the range of HJC electric visors.
http://snowcitymi.com/catalog/index....cPath=42_44_48
Cant be that dangerous...
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