Banks Power 04-14 Nissan 4.0L Frontier All Cab/Beds Monster Exh Sys - SS Single Exh w/ Chrome Tip3 inch stainless mandrel bent cat back pipes and straight thru muffler cut backpressure up to 93%. Improve flow up to 104%; throaty sound, 4 inch polished tip. Bolt on direct fit. FRONTIER PICKUP: A 3 inch mandrel bent direct fit cat back system, Banks Monster exhaust improves mightily on the crimped 2 1 4 inch stock exhaust with an all stainless steel system that uses larger diameter pipes for optimum exhaust flow. It's engineered to use the stock