Description
Overview
The Flowmaster Super 40 Series Exhaust Muffler was developed straight from Flowmaster’s Top Ten race muffler lineup for serious street/strip use. Engineered around Flowmaster’s proven Delta Flow® technology, this muffler delivers the deep, powerful tone late-model muscle car owners crave while managing the low interior resonance that makes a performance exhaust livable on daily drives. When you shop for exhaust upgrades that balance attitude and refinement, the Super 40 sits right in that sweet spot.
With a larger case profile, the Super 40 offers the best of both worlds: real performance flow and an aggressive, unmistakable sound. That bigger case makes it especially well suited to forced-induction and high-horsepower vehicles, where airflow and back-pressure management matter most. If you know the classic Original 40 Series tone, the Super 40 keeps that deep, powerful character but layers in the flow and reduced drone benefits of Delta Flow® internals.
Built to Last
Durability is designed in. This magnaflow-class competitor from Flowmaster is constructed of 16 gauge 409S stainless steel and fully MIG welded, so it stands up to the heat, vibration, and abuse of aggressive driving. A high-temperature paint finish helps protect the case, and the whole unit is built for the long haul as the centerpiece of your car exhaust setup.
Fitment & Configuration
This is a universal-fit muffler with a 3.00″ inlet diameter, making it a flexible building block for a custom exhaust system or a targeted muffler swap. It uses new hangers (not included) for mounting, and exhaust tips are sold separately, so you can spec the exact look and hardware your build calls for. It’s ideally suited to late-model muscle car applications where an aggressive sound level is the goal.
- Flowmaster Super 40 Series — derived from the Top Ten race muffler lineup
- Delta Flow® technology for performance flow and low interior resonance
- Larger case profile — ideal for forced-induction and high-horsepower vehicles
- 16 gauge 409S stainless steel, fully MIG welded construction
- 3.00″ inlet diameter, universal fitment
- Aggressive sound level with the deep, powerful Original 40 Series character
Whether you’re piecing together a cat back exhaust system, replacing tired mufflers, or upgrading to a true performance exhaust, the Super 40 gives your automobile the aggressive voice and durable construction that define a serious build. Pair it with your choice of piping, new hangers, and exhaust tips to complete the exhaust system your way.
Warning: This product carries a California Proposition 65 warning. Emission Code: 5.










