Description
Overview
The Flowmaster Super 40 Series Exhaust Muffler brings proven race-bred technology to the street and strip. Developed directly from Flowmaster’s Top Ten race muffler lineup, this Super 40® muffler is engineered to deliver that deep, powerful, aggressive tone enthusiasts crave while keeping performance at the forefront. Whether you’re building a Dodge, GMC, or Plymouth project, this Flowmaster muffler is a serious upgrade over a factory car exhaust setup.
At the heart of this performance exhaust component is Flowmaster’s Delta Flow® technology. The larger case profile provides the best of both worlds — strong flow characteristics and a commanding sound — making it especially well suited to forced induction and high horsepower vehicles. You get the deep, powerful sound reminiscent of the Original 40 Series, now paired with the improved performance and reduced interior resonance that Delta Flow® delivers.
Built to Last
Durability is built into every seam. This magnaflow-class competitor from Flowmaster is constructed of 16 gauge aluminized steel and fully MIG welded for maximum strength, then finished in high-temperature paint to hold up under real exhaust temperatures. It’s engineered for the demands of street/strip driving, where both reliability and sound matter.
Key Highlights
- Super 40 Series muffler featuring Flowmaster Delta Flow® technology
- Aggressive, deep and powerful sound with low interior resonance
- Larger case profile ideal for forced induction and high horsepower builds
- 16 gauge aluminized steel, fully MIG welded construction
- High-temperature paint finish for lasting durability
- 2.25″ inlet diameter with a universal fitment design
Fitment & Options
This muffler carries a universal fitment with a 2.25″ inlet diameter, making it a versatile choice for a wide range of Dodge, GMC, and Plymouth street/strip applications. It’s rated as a street/strip vehicle type muffler with Emission Code 5. Please note that exhaust tips are sold separately, so you can pair this muffler with the tip configuration that best matches your build and your existing exhaust system.
If you’re ready to shop for exhaust upgrades that transform how your vehicle sounds and performs, the Super 40 is a standout. As a core piece of a larger catback exhaust or a full cat back exhaust system, or as a direct muffler replacement, it delivers the aggressive character and race-derived engineering Flowmaster is known for. For anyone comparing Flowmaster mufflers and Magnaflow mufflers, the Super 40 makes a compelling case with its blend of durable construction, proven Delta Flow® performance, and unmistakable sound.
Whether you’re finishing off a cat back muffler system or simply want a more aggressive exhaust automobile note, this muffler brings the performance and tone your build deserves.
