Huge 2.5 inch stainless mandrel - bent tailpipe with a polished or black tip. Straight - thru Monster muffler flows up to 140 better than stock. Slashes backpressure, throaty sound. Constructed 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 cfm at 1 psi - a 140 improvement over the stock exhaust's 208.6 cfm, and about 44 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. For maximum results, combine with Banks TorqueTube system. Includes Stainless Monster muffler, Stainless 2.5 inch tailpipe, Stainless Polished Turn - Down tailpipe tip, Mounting hardware.