Agency Power has developed these Section 1 pipes to give you a complete header back race exhaust system. The Section 1 performance pipes are sold individually and were engineered with modularity in mind. The all T304 stainless steel pipes feature TIG welding, thick flanges, 02 Bungs, gaskets, and a complete polished finish. The Section 1 pipes replace the additional mufflers and add high flow resonators. The Section 2 pipes delete the resonators and give you a free flowing unrestrictive exhaust system. These pipes in conjunction with our Agency Power muffler and headers will yield an amazing gain.