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2013 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster 70 Series Big Block II Mufflers Reviews


Flowmaster 70 series big block

Reviewed By Chad H (Lake Charles, LA) Reviewed for a 2013 GMC Sierra —3/29/2017 4:55 AM

Overall, I am happy with the muffler. As my daily driver and primary family vehicle used for traveling, I didn't want anything too loud. This muffler is a little louder than what I expected, comparing to a 50 series installed on same truck. I removed the 50 series last year and had to go back with the factory muffler due to a drone when pulling my trailer or boat. Using Flowmaster's sound chart, I thought the 70 series would be only choice as it looked to be the quietest muffler Flowmaster makes

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Magnaflow Performance Mufflers Reviews


Very good product

Reviewed By dalton w (COAL TOWNSHIP, PA) Reviewed for a 2013 GMC Sierra —11/4/2015 5:56 AM

I installed the 14" magnaflow performance muffler on my sierra. It sounds excellent, not to loud and not to quiet. Just has that perfect tone that a truck should sound like.

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Flowmaster Super 10 Series Mufflers Reviews


flowmaster 10 review

Reviewed By STEVE C (Ruston, LA) Reviewed for a 2013 GMC Sierra —10/28/2014 7:00 AM

FLOWMASTER 10 MUFFLERS SOUND GREAT AND INSTALL EASY, AND A GREAT PRICE.

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