The MagnaFlow Aluminized Custom Builder Series 18982 i's weight-optimized and engineered to enhance your diesel truck with the dyno-proven performance and powerful, resonant sound that we’re famous for. Custom Builder Pipe Kit 18982 features durable, corrosion resistant aluminized steel construction and includes a set of 5in. diameter mandrel bent pipes. Each component is produced using advanced CNC precision robotic manufacturing and backed by MagnaFlow’s 1-year limited warranty. This emissions-legal downpipe-back kit utilizes a Clamp-On inlet connection and is designed to produce Agressive exterior and Moderate interior sound levels with a Single Passenger Side Rear exit. Professional installation is recommended due to the possible cutting, welding and fabrication required.