The MagnaFlow 2007-2011 Jeep Wrangler Rock Crawler Series Cat-Back Performance Exhaust System 15239 brings superior boulder-climbing capabilities to your 3.8L 2007-2011 Jeep Wrangler with a weight-optimized, dyno-tested, corrosion resistant and durable stainless steel design engineered to closely hug the undercarriage of your rig for improved ground clearance. Exhaust kit 15239 is engineered to produce our powerful, resonant signature exhaust note at Aggressive exterior and Moderate interior sound levels. Extensive 3D scanning was used during the development of this Jeep Wrangler exhaust system to create a direct-fit design, enabling a do-it-yourself installation process. 15239's emissions-legal cat-back design replaces all your rig's exhaust components from the catalytic converter on back with its 2.5in. diameter mandrel bent main piping that passes through 1 Straight-Through mufflers before ending in a Single Straight Driver Side Rear exit. The turndown style tipless exit improves departure angles, allowing for more options when it comes to traversing tricky boulders and other off-road obstacles. Exhaust system 15239 is produced using advanced CNC precision robotic manufacturing techniques and backed by MagnaFlow's limited lifetime warranty.