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GMC S15 Pickup Performance Mufflers

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Latest Customer Reviews

Flowmaster Super 44 Series Mufflers Reviews


Nice piece

Reviewed By Jacob P (APPLETON, WI) Reviewed for a 2011 Chevy Avalanche —8/15/2017 12:14 PM

Nice replacement that shaves some serious weight, growls low, isn't too loud. Does drone for me a bit in 4 cylinder mode. If your truck is like mine go find some 3 inch Outside Diameter piping and 3 inch inlet outlet muffler and they'll go together well

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Flowmaster Pro Series Mufflers Reviews


Smith trucking

Reviewed By Jefferson H S (Wheelersburg, OH) —8/9/2017 10:37 AM

It works excellent on a 660 Kenworth 475 cat

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Flowmaster Super 40 Series Mufflers Reviews


Sounds Awesome!!!

Reviewed By Lloyd B (Clarksville, TN) Reviewed for a 2015 Dodge Ram —8/4/2017 3:40 AM

I initially considered the Flowmaster American Thunder Series direct replacement muffler for my 2015 Ram (5.7 V8), but the prospect of paying well over $300 for a 50 Series with some extra pipe for direct replacement just didn't make sense. I decided to go with a stainless Super 40 Series (Part#8530452), which I purchased via Auto Anything for $93. Installation at my local muffler shop was $80. The result: an awesome throaty sound with minimal cabin drone. Oh yeah, it cost me under $200, too!

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