A 3" mandrel-bent direct-fit cat-back system, Banks Monster exhaust improves mightily on the crimped 2-1/4" stock exhaust with an all-stainless steel system that uses larger diameter pipes for optimum exhaust flow. It's engineered to use the stock hangers, ground straps and rear balancer, and includes a 3" constant-diameter Y-pipe-that replaces the restrictive factory Y-pipe. As a result, Monster flows 104% better than the stock factory exhaust while reducing backpressure by 93%. This allows the Nissan Frontier to produce more power with less work, and cuts 0-60 MPH times by 4-tenths of a second. Monster exhaust features an ultra-low restriction, 3", straight-through, heavy-gauge polished stainless Monster muffler that outflows the stock muffler by 183% while providing the unmistakable Banks Power sound. It also includes a cool 4" polished 304-stainless, rolled-edge, air-cooled tailpipe tip. The entire system is backed with a Lifetime Warranty, and is fully compatible with Nissan's factory warranty. Includes: Stainless, 3" straight-through polished-stainless Monster muffler; Stainless, 3" constant-diameter Monster Y-pipe and tailpipe; Polished-stainless, 4" rolled-edge, air-cooled tailpipe tip. Application Year Range Part # Monster Exhaust 4.0L Frontier 2004-07 48125 Extension kit 4.0L Frontier | Crew cab, long bed 2007 48126 Monster exhaust system 4.0L Frontier | Crew cab, long bed 2007 48127 Owners Manual(s) Monster exhaust system (Part #97057) Download