Gitarzan wrote on 12/31/69 at 16:00:08:Research it for sure, it may not be the case today, but years ago in my first riding life, painting with the wrong stuff would severely weaken the plastics used in a helmet.
Helmets may be better now in that respect, but I'd still check with the manufacturer for advice.
You don't want your helmet to let you down when you need it.
Thanks again for the advice. I did check with HJC and they said it was o.k. Even told me how to do it! Their note is pasted below.
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Susan,
The correct and safest way to paint our helmets is by using a two stage eurethane automotive paint (base coat / clear coat combination). Automotive type paint is what's used at our factory in Korea. In preparing your helmets, do not remove any of the rubber trim or vents, rather, mask them with a high grade 3M painters masking tape. Scuff all the shiny surface with a high grade wet / dry 3M automotive sanding paper (320 grit - 400 grit). Wipe your helmet down with some wax / grease remover to clean off all the excess sanding powder. Then spray your base coat - let dry - spray your clear coat.
Please make note that any modifications made to your helmet are subject to possibly having the warranty void at our determination.
If you have any other question feel free to email me back or you can get in touch with me @ 562 741-1152. Hope this helps!
Isac
Paint Tech
HJC America