Use this exhaust system when you're driving your 1999 - 2003 Ford F - 250 or F - 350 Super Duty truck on a daily basis, whether it's for work or a weekend adventure. It's great for truck owners who want better performance on a budget and live in areas with little precipitation. The exhaust system uses heavy - gauge Aluminized Steel tubing and all tubing is mandrel - bent to ensure smooth exhaust flow.