Huge 2.5 inch stainless mandrel-bent tailpipe. Straight-thru Monster muffler flows up to 108 percent better than stock. Slashes backpressure; throaty sound. Constructed of heavy-gauge stainless steel, Banks Monster features a supersized, 2.5 inch tailpipe. Banks Monster muffler, its straight-through performance muffler, is the industry's least restrictive. In comparison tests, Banks muffler flowed 543.2 cfm at 1 psi - a 108 percent improvement over the stock exhaust's 260.0 cfm. 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 a Banks exhaust manifold available for 1991-2001 Cherokees. Includes: Stainless Monster muffler; Stainless 2.5 inch tailpipe; Mounting hardware.