I just used this product for the fist time on my Borla exhaust tips, and it is a wonderful product. Easy application, and it works great! You can get it at any automotive store (I got it at advanced auto parts). From the Mother's Website:
Mothers® Billet Metal Polish takes our world famous metal polish technology to a whole new level. State of the art cleaners and cutting edge formulation give your billet, forged and finely cast aluminum, brass and other polishable metals the absolute finest finish available—guaranteed. If you’ve spent big bucks on quality metal accessories, step up to a polish worthy of your investment.
#05106, 4 oz.
THUMBS UP PRODUCT~