Description
Overview
The Flowmaster Outlaw Series Race Muffler is built for drivers who demand maximum exhaust flow and an unapologetically aggressive sound. Part of Flowmaster’s Outlaw lineup, this muffler is engineered for racing applications where a muffler is required but there is no set decibel limit to meet. If you want your classic muscle car to announce itself the moment you turn the key, the Outlaw delivers a bold, high-volume tone that matches the attitude of a serious performance build.
With a universal fitment and a large 4.00-inch inlet diameter, the Outlaw is designed to keep exhaust gases moving freely for the kind of flow high-horsepower engines crave. It can be connected directly to your header collectors or integrated into an existing exhaust system, giving you flexibility whether you’re building a purpose-driven race setup or upgrading a street-and-strip machine.
Key Benefits
The Outlaw prioritizes performance and sound over restriction. Its aggressive character is intentional — this is a race-oriented muffler for enthusiasts who want their exhaust note to be loud, deep, and dominant. The high-temperature paint finish is chosen to stand up to the demanding heat of exhaust duty, helping the muffler look the part in an environment where temperatures run hot.
- Aggressive sound level tuned for racing and high-performance builds
- Large 4.00-inch inlet diameter for maximum exhaust flow
- Universal fitment for flexible installation across builds
- Connects directly to header collectors or adds into an existing exhaust system
- High-temperature paint finish suited to the heat of exhaust applications
- Recommended for racing applications with no set decibel limit
Options & What’s Included
Exhaust tips are sold separately, so you can pair the Outlaw with the tip style and configuration that best fits the look you’re after. This keeps your build fully customizable — choose the tip setup that complements your vehicle and finish out the system exactly the way you envision it.
Fitment
Designed with a universal fitment, the Outlaw Race Muffler suits a wide range of builds and is especially at home on classic muscle cars. Its 4.00-inch inlet and direct-to-collector compatibility make it a natural choice for racers and performance builders assembling a high-flow exhaust. As with any universal component, confirm that the inlet diameter and mounting position work with your specific exhaust layout before installation.
For enthusiasts chasing raw sound and free-flowing performance, the Flowmaster Outlaw Series Race Muffler is a purpose-built piece that lets your engine breathe and your exhaust roar. Whether bolted directly to the headers or worked into an existing system, it brings the aggressive, race-ready character that defines the Outlaw name.








