With a woven glass fiber woofer cone, no, they aren't going to be waterproof. Infinity's website does not even mention anything about water resistance.
Yes I know. I said that in my first post.
Sorry for having to spell it out after two posts but:
Why would someone want to fit low impedance, non waterproof speakers to a Goldwing - The impedance question might have been dealt with but it's not a risk I'd want to take namely a 50% decrease in value. I don't know about parts of the US but here in the UK it p*sses down....a lot!! So wont these speakers be a burnt out, soggy mess quite quickly?