Ready to give your 6.4L Power Stroke Ford Super Duty a deeper, healthier sound and better exhaust flow? This MBRP S6242AL system is a popular DPF-back upgrade. That means it replaces everything from the Diesel Particulate Filter (DPF) back, so it won't mess with your factory emissions equipment – it's 50-state legal. It's built from tough 16-gauge aluminized steel, which is a great balance of durability and value (perfect if you're not driving in heavy salt all winter). You get a 4-inch pipe diameter with a single-side exit and a nice 5-inch rolled tip for a clean look. Expect a mellow, authoritative diesel tone that's not obnoxiously loud or droney on the highway – great for daily driving and towing. It's designed to reduce backpressure, which can help your engine breathe a bit easier. Fits 2008-2010 Ford F-250, F-350, and F-450 trucks (all cabs and beds, but NOT Cab & Chassis models). Installation is straightforward with basic tools. If you want an aggressive look and sound without breaking the bank or your emissions compliance, this is a solid choice.