This MACH Force XP Hi-Tuck "RB" Cat-Back exhaust system is constructed of 3" mandrel-bent 409 stainless steel tubing. This exhaust system comes complete with a 22" free-flowing muffler, OE style bayonet hangers, band clamps and all hardware necessary for a hassle-free installation. The smooth curves and increased diameter of this exhaust system helps remove restriction and keeps exhaust gas flowing smoothly for increased horsepower, torque and throttle response.22" Muffler:This system incorporates a large 22" stainless steel muffler which produces a mellow sound while eliminating exhaust drone.Hi-Tuck:Engineered with off-roading in mind, this system uses a large 22" forward mounted muffler, for long travel clearance and allows for greater approach and departure angles.Two-Piece Design: This system is designed for a hassle-free installation using only two pieces for the entire installation.Use with Air Compressor Kits:The driver side exit location is perfect for adding on-board air compressor systems to the underside of your Jeep. If you are considering an on-board air compressor kit, you need to use this system.Note: This exhaust fits the 4-door Wrangler JK Unlimited only