I've used a aircraft quality paint stripper to remove powder coat before. Doesn't hurt alum wheels, not sure about the magteks. You can get it in a rattle can or in can which you have to brush on, the brush on works better. Use rubber gloves as the sh*t burns like hell when you get it on your skin. And REALLY burns when you get it on your face and in your eyes
Hope that helps.
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To much HP is barely adequate!