Hog Performance uses  Stainless Steel in all Exhaust systems.   All components are formed,stamped, mandrel bent, tig welded and polished in our modern manufacturing facility. Unlike other so-called manufacturers, we do not out source any part. Mandrel bending is the only way to bend performance exhaust, tig welding is the only way to weld it, and polishing makes it look great. All systems are constructed of stainless steel, including all hardware (nuts, bolts, etc), tubing, clamps, hangers, mufflers and tips. Hog Performance systems will give your car or truck the look, feel and performance you deserve and appreciate.