Looking for an exhaust system that can really take your Duramax to the next level? Check out the AFE 49-44043-P Mach Force XP 4 Inch Dual DPF-Back Exhaust. This tough, durable system is designed to withstand whatever you throw at it, with 4" 409 stainless steel construction and OE-style bayonet hangers. It's also designed to fit perfectly with your spare tire, so you never have to worry about clearance issues. Plus, it comes with all the hardware you need for easy installation. And to top it all off, it features 6" exhaust tips for a truly aggressive look. If you're serious about getting the most out of your Duramax, this is the one exhaust you need.