The Soul Performance Muffler Bypass Pipes - POR9971MBPB are high-quality, performance-oriented exhaust pipes designed specifically for Porsche 997.1 models. These pipes are made from T304L stainless steel and feature mandrel-bent tubing for maximum flow and durability. They are designed to replace the restrictive factory mufflers, resulting in increased horsepower and torque, improved exhaust sound, and reduced weight. These muffler bypass pipes are a direct bolt-on upgrade and do not require any modifications for installation. They are a perfect choice for enthusiasts looking to enhance the performance and sound of their Porsche 997.1.