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2004 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster Super 50 Series SUV Mufflers Reviews


Sounds sweet Chevy 5.3

Reviewed By marshall m (Eaton Rapids, MI) Reviewed for a 2004 GMC Sierra —1/4/2016 4:21 AM

I'm kinda old school so I went with the 50 series. Sounds mean on take off but purrrs like a panther on the highway.

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Magnaflow Performance Mufflers Reviews


nice muffler

Reviewed By James N (Hinsdale, NH) Reviewed for a 2004 GMC Sierra —3/20/2013 4:07 PM

haven't used enough to know if my mileage has improved but sounds great.not at all loud when cruising but can be when you want it to be

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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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