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bikerbabe911 i am not 100% sure the newer aluminum on bikes these days is coated like the older stuff was. mine actually started to flake off after a year or so, but it got all spotted before it started to flake off. i might have used harsh cleaners that caused that, but not sure. take it to a place that does metal polishing and ask them. like twizted said, you don't wanna have to pay for something you might not need or make it worse.
after i stripped it off though it looked better than when it left the factory and had a mirror finish to it.
I'd rewash it with mild soap and water, dry it off. Then use some White Diamond polish on them, it will either bring the chrome up to shine, or it will make the aluminum shine like it's chrome.
The more you use White Diamond the shinier it will get (and yes the rag will turn ugly black).
That is just soap scum that you forgot to rinse off dummy. By the way the cases on the switch back are polished aluminum and clear coated. They do not tarnish.
i know that you can strip them with a buffer and clay bars but that takes a while. paint stripper will eat any painted or coated surface so be careful if you decide to go that route. maybe some other guys know a better way to strip off that crap. in a few years it turns yellow anyway.
If it's just a coating, I'd clean it off with a rag and lacquer thinner, which I've used on Harley chrome, aluminum and even paint with no problems, to take off dried oil and such.
Before doing that, I'd make sure it's an actual problem with the clear coat and not just spots from failing to dry those parts with a rag after they were washed.
The covers are not chrome on the switch back....They are polished aluminum...You will need a good aluminum polish and some elbow grease...I would not remove the cam cover to polish it...You will lose oil and need to buy another gasket...I don't think they would call it a cam cover if there is nothing behind it.
As ih4x4 has said in his charming way it kinda looks like soap scum that just needs washing off but if it isn't try this assuming you can get it in the States, I've used it for years and it works really well an all metals that aren't chromed, including alloys although they don't recommend to use it on polished alloys as it is slightly abrasive but if your covers are really screwed up you've nothing to loose.
With the bike completely cold spray the areas with simple green concentrate and let it sit for 5 minutes. Then rinse with warm water liberally. Now wash with car soap and rinse again. If it is only soap scum it should come off . If you fubared the clear coat then you are in for some heavy polishing with the stuff from JP cycles.
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