Oly Fourms Organization

The Flowmaster 40 series of mufflers is known for both quality of design and its capacity to contribute to the improvement of the entire vehicle’s performance. After all, it is the star centerpiece of any Flowmaster American Thunder Exhaust System. The crafting of the Flowmaster 40 series uses aluminized steel, which resists corrosion. Its mig welds are designed with precision for maximum strength. Each unit has the Flowmaster name proudly embossed in its casing.

This series of mufflers is recommended for off-road vehicles, early muscle cars, rides with dual exhaust systems and race vehicles. The Flowmaster 40’s sound combines with the engine’s power and produces a distinct resonance in the vehicle’s interior. As with its engineered design of two chambers, this enables torque and horsepower maximization – definitely an improvement compared to any original equipment (OE) or other similar aftermarket products. As added assurance for all owners, every Flowmaster 40 Series Muffler comes with a 3-year warranty.