Anyone know of a good wheel cleaner and/or sealant to help prevent and fix flat black wheels from fading, I have some pro comp wheels fading way too quickly

 

Are you sure they are fading? My black pro comps started getting heavy brake dust build up that made them appear discolored. I couldn't really steel wool them since they are painted wheels. But after soaking in wheel cleaner and scrubbing(a lot) they look good again. However spray on bed liner will be the answer when they start looking really rough.

 

Hear, Hear with the above statement.. I would make it a routine to systematically remove the wheels from time to time and clean them more so than just power washing or cleaning one side while on the jeep.. Wheel cleans have proven successful for me but one must spray this product on one wheel at a time, rinse off within the recommended time limit then brush wash with warm soapy water and I've found that a kiwi shoe polish or horse hair brush is good for the exterior surface of the wheel while a scotchbrite pad used on the inside or back not viewable area works wonders for me. The scotchbrite pad is not recommenced on painted or polished surfaces.. In your case I would use the painted surface approved wheel cleaner. As for a recommended wheel cleaner, Can't help you there cause I find most of my jeep care products at the local car wash.. people simply discard unused portions.
However, If you're sure that the wheel is fading.. one can opt to just repaint it yourself.. which I have done and just takes a bit of practise and proper cleaning, prep work to insure that the paint adheres or one can use a adhesion promoter.

 

on my raptor my detail guy at work would spray degreaser on them and scrub them real good, rinse and then spray them with quick detailer or spray wax, they always came out looking real good.

 

I have satin wheels so not sure if it would work for flats but, and I know this probably sounds odd but works excellent for me, I spray my rims with Black Magic Tire Shine when I spray my tires and then wipe them down with a rag. Takes the brake dust right off and looks great.

I discovered this by accident when I was spraying my tires and over spray got on the rims. I wiped the splatter off and everywhere I had to wipe looked better than the rest. So I started just spraying the rims too. It's actually easier doing the tires when you don't have to worry about over spray. I also use Back to Black Tire Shine which worked just as good.

 

The clear they use on them is likely the reason they are getting dull- Try using Flitz polish

 

I second the above, I just spray tire shine on my flat black wheels when I wash the jeep. It keeps them looking good for a few weeks until the next washing.