Monster Exhaust System for 18-23 Jeep Wrangler JL 3.6L, 2-Door Banks Power2. 5 inch mandrel bent stainless steel system. Improves flow by removing factory resonators and restrictive OEM muffler. Gain rear end ground clearance while reducing exhaust system weight by over 36 percent. Strong authoritative growl without highway drone. The Banks Monster Exhaust provides an aggressive growl under load without annoying highway drone. With a full 2. 5 inch mandrel bent design, the Monster Exhaust removes the under body resonator