Constructed entirely of heavy gauge stainless steel, Banks Monster features a supersized, 2.5 Inch tailpipe with a stainless tailpipe tip polished to a mirror finish. Banks Monster muffler, its straight through performance muffler, is the industry's least restrictive. In comparison tests, Banks muffler flowed 501.2 Cubic Feet Per Minute at 1 PSI a 140 Percent improvement over the stock exhaust's 208.6 Cubic Feet Per Minute and about 44 Percent better than the nearest competitor. Monster virtually eliminates backpressure from the catalytic converter back, for more power and efficiency and an authoritative, yet civil, exhaust note.