2006-2007 GM HD 6.6L 4" Turbo Down Pipe (MAG15399) Roofs & Roof Accessories>Roof Rack vibration-proof fit within the factory

vibration-proof fit within the factory 194-size socket

Includes SST lift-specific Forged Torsion Keys

engineered to shield the electronic sway bar disconnect and factory frame extensions from confirming trail damage

ensuring its rear looks as good as it sounds

Adjustable joint

2006-2007 GM HD 6.6L 4" Turbo Down Pipe (MAG15399) Roofs & Roof Accessories>Roof Rack vibration-proof fit within the factoryThe MagnaFlow Turbo Downpipe is engineered to enhance exhaust flow directly from the turbocharger for improved diesel performance. Featuring a 4in diameter mandrel bent design, this downpipe provides smooth, unrestricted airflow while maintaining a weight optimized construction. Built from 100% durable, corrosion resistant stainless steel and manufactured using precision CNC robotic techniques, it is designed to deliver long lasting reliability in