Flow FX Direct Fit Muffler Fits 20-25 GM 2500HD/3500HD 6.6L Gas Engine FFX Direct Fit Muffler Exhaust System, 409 stainless steel Part# 718155 $409.95 Add To Cart

Our Flowmaster mufflers feature innovative designs like the patented scavenging muffler technology that increases engine horsepower, torque, and mileage, while also offering a range of sound levels.

Flowmaster exhaust, get the sound and performance you want from a custom exhaust. Compare muffler tones and read reviews to find the right setup.

Shop the complete line of Flowmaster products for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Available at Holley.com!

Flowmaster is a legendary name in high-performance exhaust systems and mufflers, trusted by car enthusiasts and performance seekers alike. Known for delivering that signature deep, aggressive …

Aftermarket mufflers have one major purpose, and that’s to reduce exhaust noises. Flowmaster mufflers use patented internal designs to help reduce back pressure and turbulence, which allows for better …

May 5, 2025 · Our full comparison guide includes the loudest to quietest Flowmaster mufflers available. Find the best fit for your ride from the experts at RealTruck.

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Flow FX Chambered Muffler – 2.50” Offset In / 2.50” Offset Out – Moderate Sound – Stainless Steel – Affordable Performance for Modern Trucks, Muscle Cars & Daily Drivers (71236)

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