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Flowmaster manufactures a wide variety of Street Mufflers for a wide range of applications and sound choices. We make mufflers designed for trucks and cars with big block engines all the way to small 4 cylinder engines and everything in between. 

And depending on your choice of sound, we have muffler series with mild , moderate, aggressive, and very aggressive sound.  Check out our different series mufflers. If you don’t find what you are looking for or just unsure of your choices, call our technical support department at 707-544-4761

Flowmaster Mufflers Differences Explained

Remember, our Stainless Steel Mufflers come with Lifetime Limited Warranty.

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Looking for the most aggressive sounding Flowmaster muffler available? Flowmaster’s new Super 10 Series mufflers are so aggressive that we can’t even recommend them for use on ….
The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers a powerful “Flowmaster….
The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing 2-chamber street muffler we’ve ever built! Available in either 4095 Stainless ….
Developed from our Top Ten race muffler lineup for use on the street and strip. Utilizing Delta Flow Technology, this muffler gives the best performance to….
Flowmaster’s Delta Flow 40 Series two chamber design incorporates Flowmaster’s patented Delta Flow technology. The “Delta” deflectors generate increased scavenging for better performance and…


For true dual exhaust performance where only a single exhaust system will fit (such as is commonly found in classic Camaros and Firebirds), the 80 Series Cross-Flow muffler fits transversely….
The 50 Series Heavy Duty Muffler is appropriately named, a tough customer just like the trucks it was designed for. With 4.00-inch internal components and large case size, these mufflers help….

Flowmaster has taken the laminar core of our classic HP-2 muffler and wrapped it in a new compact square case. The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar flow mufflers, now in a new sleek styling.