Description
Overview
The Flowmaster Super 40 Series Exhaust Muffler is a performance muffler developed from Flowmaster’s Top Ten race muffler lineup for street and strip use. Featuring Flowmaster’s proven Delta Flow® technology, this Super 40® muffler delivers a deep, powerful, aggressive tone while keeping low interior resonance in check. Its larger case profile gives you the best of both worlds — serious flow for performance gains and a bold exhaust note that stands out. If you’re ready to shop for exhaust upgrades that back up their sound with real engineering, this magnaflow-caliber Flowmaster muffler belongs on your build.
Whether you’re chasing a more aggressive car exhaust note or upgrading the exhaust system on a late-model muscle car, the Super 40 is engineered to perform. Flowmaster specifically notes its strengths on forced induction and high horsepower vehicles, making it a smart choice for boosted and big-power applications where flow and durability matter most.
Built to Last
This performance exhaust muffler is constructed from 16 gauge 409S stainless steel and fully MIG welded for maximum durability. A high-temperature paint finish helps it stand up to the heat and elements that come with a hard-working exhaust automobile setup. From daily driving to weekend track duty, the Super 40 is designed to hold up.
Key Specifications
- Muffler Series: Flowmaster Super 40® with Delta Flow® technology
- Construction: 16 gauge 409S stainless steel, fully MIG welded
- Inlet Diameter: 3.00″
- Sound Level: Aggressive — deep, powerful tone with low interior resonance
- Finish: High-Temperature Paint
- Fitment: Universal, ideal for late-model muscle cars
- Mount Type: Uses new hangers (not included)
- Emission Code: 5
Fitment & Configuration
This is a universal-fit muffler with a 3.00″ inlet diameter, giving fabricators and enthusiasts the flexibility to integrate it into a custom exhaust system or upgrade an existing cat back setup. Keep in mind that new hangers are not included and exhaust tips are sold separately, so plan your installation accordingly to complete your cat back muffler system the way you want it.
For anyone comparing mufflers — from a magnaflow muffler to other flowmaster muffler options — the Super 40 stands out by combining the deep, iconic sound of the Original 40 Series with the added performance and reduced drone of Delta Flow® technology. It’s a proven choice for enthusiasts building a serious exhaust, whether the goal is a louder car exhaust, a smoother cat back exhaust system, or a durable centerpiece for a high-horsepower performance exhaust.
Warning: This product carries a California Proposition 65 warning.
