Flowmaster Catback System 409S - DOR - Outlaw - Aggressive Sound Ford Mustang 2005-2010 4.6L V8

The Flowmaster 409S “DOR – Outlaw” Cat-Back System for 2005–2010 Mustang 4.6L V8 delivers deep, aggressive flowmaster muscle-car sound and improved exhaust performance. With durable dual-outlet construction in stainless steel and direct-fit hardware, it’s the perfect plug-and-play upgrade for drivers who want to stand out—on the street or the track.

Top Benefits

• Raw, Aggressive Sound – Delivers a powerful, deep rumble at idle and a full-throated growl at high RPMs—Flowmaster’s signature tone without excessive drone.

• Better Performance – Improves exhaust flow and reduces backpressure for enhanced throttle response and modest horsepower gains.

• Dependable Durability – Made from 409S stainless steel for exceptional resistance to corrosion and long-term reliability under daily and spirited driving.

Key Features

• 409S Stainless Steel Tubing – Combines superior corrosion resistance with lightweight performance and longevity.

• Dual Outlet Design with Mufflers – Crafted to deliver Flowmaster’s classic “Outlaw” tone—aggressive yet livable.

• Exact-Fit Clamps and Brackets – Engineered to match factory hanger points, ensuring a clean, rattle-free fit and easy installation.