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The Cat-Back System MF Series Performance Exhaust System is engineered from 409 stainless steel and mandrel-bent for long-lasting durability. Magnaflow MF Cat Back Performance Exhaust delivers a smooth deep sound and the needed wide-open performance power. Magnaflow designed this kit with straight-through flow for unregulated horsepower and torque for great power while keeping exhaust efficiency. Product fits 2006-2010 Jeep Commander and is backed by a lifetime warranty construction, shipping is free.