Creates maximum performance and extreme mileage gains. The free flowing rear side exit exhaust system is constructed out of 2.25 in. mandrel bent 409 stainless steel and uses bayonet style hangers and band clamps for a hassle free installation. Fits both the slip-fit and flange-fit cats thats both on the OE cat and universal cats. Uses all factory mounting locations providing stability and a hassle free installation. High quality OE style flange and band clamps are used for a complete 360 deg. sealing surface eliminating leak paths. A straight through designed; free flowing stainless steel muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig. OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time. MACH Force-Xp 2-1/2 IN 409 Stainless Steel Cat-Back Exhaust System Jeep Wrangler (TJ) 97-06 L6-4.0L Jeep Wrangler (TJ) 97-06 L6-4.0L