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.

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

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

Get the best Flowmaster Muffler products at the right price. Order online or pickup at your local AutoZone store.

Shop for Flowmaster Mufflers in Flowmaster. Buy products such as Flowmaster 953045 Super 40 Muffler - 3.00 Center In / 3.00 Center Out - Aggressive Sound at Walmart and save.

High-performance air intakes and filters designed to improve airflow, throttle response, and overall engine efficiency. Flowmaster air intake systems deliver proven performance gains, aggressive …

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 …

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.

Super 40 Series Chambered Muffler - 3.0” Center In/Offset Out - Aggressive Sound - Aluminized Steel - Perfect for Muscle Cars, Lifted Trucks, Street Rods, and High-Torque Builds (953047)