Check on ebay. I ordered a spray on liquid from the UK and it works great in the rain... well at least light rain, haven't tried it in heavy rain. Don't remember what the product is called but search on ebay and I'm sure you'll find it.
how do you guys maintain visibility? i just leave the visor half open and ocassionally wipe it with my gloves. wondering if there's any like protective finish that i can add to the visor to make the raindrops move off the side on their own or something
I throttle up and turn my head sideways, blows off most of the rain.. works well over 60ish km/h
in my opinion a larger windscreen than the mini one on my monster looks pretty ugly lol