aFe MACHForce XP 2-1/2in SS-409 Cat-Back Exhausts w/ 18in Muffler 07-17 Jeep Wrangler V6-3.6LaFe power introduces the Hi Tuck "Rock Basher" (RB) Cat Back Exhaust System for 2007 2017 Jeep Wrangler (JK) with V6 3. 6L 3. 8L engines 2 and 4 door models. This cat back exhaust system is constructed of 2 1 2" mandrel bent stainless steel tubing. 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. This exhaust system