Huge 2.5 in. stainless mandrel - bent tailpipe with a polished or Black tip. Straight - thru Monster muffler flows up to 140 percent better than stock. Slashes backpressure throaty sound. Constructed of heavy - gauge stainless steel, Banks Monster features a supersized, 2.5 in. tailpipe with a stainless tailpipe tip polished to a mirror finish. Banks Monster muffler, its straight - through performance muffler, is the industrys least restrictive. In comparison tests, Banks muffler flowed 501.2 cfm at 1 psi - a 140 percent improvement over the stock exhausts 208.6 cfm, 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. For maximum results, combine with Banks TorqueTube system. Includes Stainless Monster muffler Stainless 2.5 in. tailpipe Stainless tailpipe tip in polished Chrome or black Mounting hardware. Monster Exhaust System, Single Exit, Black Obround Tip for use with 1997 - 1999 Jeep 2.54.0L Wrangler.