Here is the info direct from Banks:
The Banks Monster exhaust is now available for the 2005 Nissan Frontier 4.0L V6. The 3” stainless steel mandrel-bent exhaust system is designed to be a direct-fit, bolt-on system that flows 104% more than the stock factory exhaust while reducing backpressure by more than 93%. Engineered to use the stock hangers, ground straps and rear balancer, Banks Monster exhaust replaces the crimped 2 1/4- inch stock exhaust with an all-stainless steel system that uses larger diameter pipes, optimizing exhaust flow. As a result, the 2005 Nissan Frontier is able to produce more power with less work, reducing 0-60 MPH times by 0.39 seconds. The Monster Exhaust features a Banks and ultra-low restriction, 3-inch, straight-through, heavy-gauge polished stainless Monster muffler that outflows the stock muffler by 183% while providing the Banks Power sound. It also includes a cool 4-inch polished 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; Owner's Installation Manual