Never used the product, but have heard very good results from those you have used it.
It is a 2 part restorer offered from: ATV Accessories, UTV Accessories, warn winch, cargo box - Montana Jack's

 

any product with silicon in it will bring the shine back pretty good. Pledge, tire shine stuff. All works the same. Seth 03

 

Spray it down with WD40 and wipe it down real good. It'll put a little shine and make it easier to get the mud off when you're done riding. Just don't spray or wipe your seat or you'll be sliding around.

 

This works well for keeping the snow out of your wheels too!

 

They sell a product called Plastic Renew. It is made by PC racing and can be picked up the more popular atv shops and stores.

 

Plastic Renew is garbage. Use armor all, brings mine back everytime. Although not permanent lol.

 

Plastic gloss from nova fluids. All the dealers around my way sell it. About $15 a bottle but it works awesome. Makes her look better then new,

 

linseed oil very good

 

Been there done that i recently bought a 02 grizzly 660 red it was sun faded so bad couldnt even tell it was red, if you clean it off with brake cleaner or any cleaner... i used paint thinner, then take a brand new razor blade hold it at a slight angle towards you then push down and drag toward you scraping the plastic do this all over the faded areas until its all the same color then you can either leave it like that or put clear coat on it or use a heat gun and melt the top layer slightly to make it like new hope it helps worked wonders on my griz

 

This thread is as I figured it would be except for the body shop 3m product idea. That one sounds good. All the others are responses I have been reading for several years on various websites. As usual, no one has mentioned my method and it works AWESOME! Wash plastic, wet sand with 800 grit or higher sandpaper, then spray with clear coat paint. BAM! Works freakin awesome man! Lol - have done about 8 different machines over the years this way.