05-10 Mustang 4.6/5.4L Outlaw Exhaust Kit

The 05-10 Mustang 4.6/5.4L Outlaw Exhaust Kit from FLOWMASTER is a bolt-on axle-back system engineered for Ford Mustang owners seeking aggressive sound and improved exhaust flow without full system replacement. This kit addresses the need for enthusiasts to upgrade their factory exhaust while maintaining stock manifolds and mid-pipe connectivity. Ideal for street drivers and weekend warriors, the Outlaw design delivers the trademark FLOWMASTER tone that balances street presence with manageable drone levels.

Constructed from mandrel-bent stainless steel tubing, the system features a 2.5-inch tailpipe diameter and polished 4-inch black-finished tips that provide both durability and visual impact. FLOWMASTER's signature Outlaw muffler technology uses a chambered design to reduce backpressure while enhancing scavenging efficiency—allowing the 4.6L and 5.4L engines to breathe more freely and produce a deeper, more muscular exhaust note. The stainless steel construction resists corrosion and thermal stress, ensuring longevity even in demanding driving conditions, while the black tips add modern contrast to your Mustang's rear end.

This kit is purpose-built for 2005–2010 Ford Mustang models equipped with 4.6L or 5.4L V8 engines and bolts directly to the factory axles, making installation straightforward for both DIY installers and professional shops. The complete assembly arrives ready to mount, with all necessary hardware included. Weighing 19 pounds and measuring 11.5 x 10.25 x 34.25 inches, it ships efficiently and fits within standard vehicle storage. Whether upgrading a stock daily driver or fine-tuning a modified platform, this Outlaw system delivers the exhaust character Mustang enthusiasts demand.