Since it costs less to produce, your Mazda exhaust probably left the factory made from mild steel. Plain steel isn't a bad material for your Mazda exhaust--after all, that's what most of your car is made of. The problem is, you can't paint your Mazda exhaust, and paint is what protects your car's steel body from rust. So your Mazda exhaust, hanging out there under your car where it gets hosed down with water and salt, begins to rust about ten minutes after your car is built. And you get to replace your Mazda exhaust system within five years or so. When your Mazda exhaust finally rusts through, you have a couple of options. We stock replacement Mazda exhaust components that will give you like-new performance in the original materials. The better option is to replace your Mazda exhaust or Mazda muffler with a similar system built of aluminized steel. By using aluminum-coated steel, your Mazda exhaust system will last much longer. Or go all the way with a full stainless-steel cat-back performance Mazda exhaust. You'll get more power, great sound, and a Mazda exhaust that should last the life of your car. We want to make your life easier, but we also like bringing you choices in your Mazda exhaust equipment. And we hope you always choose to come back and shop with us, where you'll get the best prices and fast shipping on Mazda exhaust and everything else we carry.