Use this MBRP exhaust system on your 2004 - 2008 Ford F150 for daily driving, off - road adventures, or when you just want to show off a great - sounding vehicle. It's for Ford F150 owners who want to enhance their vehicle's performance and reliability. The exhaust is made of corrosion - resistant T409 Stainless Steel, and all the tubing is mandrel - bent to ensure maximum exhaust flow.