A good automotive paint stripper will get the old clear off pronto, as it is quite thin,
To reclear you have a couple of options, Powdercoat clear is one. but I suggest you look into a product called POR15 specially formulated to adhere to polished metal. recently used it to clear coat a customer tanks and fenders that have that scuffed/buffed metal look finish.
Or if its only 1 small part and your into a budget solution , then head on down to the auto parts store and look for some EPOXY clear coat in a can. for mag wheels or bull bars.
make sure you clean the parts several times with acetone or thinners to remove wax etc.