Triple M,
I use soft scrub on my white 250r plastic, then after washing that off i wipe it all down with those new armor all wipes . They didn't seem to be much good for anything else so i tried em on the quad plastic. It made the white look good again .

 

Every time I'm scrubbing my white plastic I have to think some guy at Polaris actually made the decision to put white plastic on an off road mud machine. You would think someone would have said maybe white isn't the best color for something that's going to be in dirt all the time.

 

That "Zap" cleaner works really well. The commercial is annoying but it removes stains like nothing else.