The chrome is over plastic. Mine scratch with a micro fibre cleaning cloth. I woulnt even think about putting a chemical stripper on them, let alone something abrasive. Second though, maybe a mild stripper would work to loosen the paint a bit but be careful. The rest of the grill should be pretty easy, even with some abrasive. The new grills are expensive, I would def try to save those if you can. Plus, like a lot of parts my new grills I bought did not quite fit correctly. I had to take my belt sander to them.