Yes they are chrome lined....I polished mine with no problem. The trick is to use solvent soaked patches wrapped around a brass brush. Then add your JB's to that. Do not get arrgessive, just two or three mins. is all it needs and BE SURE to keep it moving and don't let the brush sit in one place. DO NOT use the scotch brite method !!! I pm'ed you my phone number if you have anymore questions.