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1999 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster Super 44 Series Mufflers Reviews


Beautiful Sound

Reviewed By Rafael M (Melrose Park, IL) Reviewed for a 1999 GMC Sierra —7/3/2012 10:02 PM

Good quality muffler. Loud but not loud enough to get pulled over. Love the sound once I reach 2,000 rpm.

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Flowmaster 70 Series Big Block II Mufflers Reviews


Flow master 70 series

Reviewed By Jeffrey S (Warsaw, MO) Reviewed for a 2008 GMC Sierra —11/10/2016 3:22 AM

I purchased this muffler to replace a smaller flowmaster muffler that was too loud for my application. This has the performance of the flowmaster technology without all the noise.

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Flowmaster 50 Series HD Mufflers Reviews


Flowmaster 50 Series HD Review

Reviewed By Donny S (Laceys Spring, AL) Reviewed for a 2002 GMC Sierra —4/6/2016 6:09 AM

Awesome experience again shopping with AutoAnything. Love the muffler, sound is just right!

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