When you drive your car, you don’t want to just feel the power, you want to hear it! The Magnaflow catback exhaust system for the Focus ST utilizes cutting edge technology from one of the industry leaders in performance exhaust systems. All Magnaflow exhaust systems are computer designed and in-house dyno tested to deliver guaranteed performance and offer a smooth deep note. Magnaflow products are quality built from 100% stainless steel and feature show caliber mirror polished mufflers and exhaust tips. All Magaflow products include their Lifetime Warranty, so you are guaranteed to enjoy your ST Magnaflow exhaust system for years to come.