Looking for a way to get the most out of your Cummins Titan XD? Check out the AFE 49-46113-P Large Bore HD 4 Inch Filter-Back Exhaust. This exhaust has been designed to improve flow by up to 5%, thanks to the 4" stainless steel construction and premium hardware. Plus, it includes high quality band clamps for a perfect fit. So if you're looking for a way to take your truck's performance to the next level, this is the exhaust for you.