Banks Power Stainless Steel Exhaust Muffler 4 Inch Inlet and Outlet W/hardware 99-03 Ford 7.3L 2011-2014-6-7l-powerstroke Fits Ford 9

Fits Ford 9

Original Equipment on 2017 F-150 Raptor

using Computational Fluid Dynamics software - on the flowbench - and later

huge inlet

which was found to be on the stiff side for smaller

Banks Power Stainless Steel Exhaust Muffler 4 Inch Inlet and Outlet W/hardware 99-03 Ford 7.3L 2011-2014-6-7l-powerstroke Fits Ford 9Monster Exhaust Benefits. Replacing the restrictive stock muffler with Banks free flowing Monster muffler makes a huge difference in airflow, sound and performance. The Banks muffler has a large inlet and outlet. And in between, the exhaust flows straight through, instead of torturously winding its way back and forth inside hairpin chambers and building up back pressure. And only Banks Monster muffler has an expansion chamber to alleviate the nasty