STILLEN 509550 Exhaust B-Pipe w/Hi-Flow Cats - 04-14 Titan / Armada / QX56 Exhaust B-Pipe - Bolts Into Factory Location of Secondary Catalytic Converters No cutting or welding for Installation - Direct Bolt-In Gains of 7 WHP - Works Great In Combination With Long Tube Headers *** OFF ROAD USE ONLY *** Not For Sale In California