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GMC Sierra Flowmaster Gas Saving Products

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Latest Customer Reviews

Flowmaster Exhaust Systems Reviews


Outstanding Exhaust System

Reviewed By Pete S (Taylorville, IL) Reviewed for a 2011 GMC Sierra —4/26/2017 9:53 AM

I installed this system on my 2011 GMC Sierra and it is fantastic. I have noticed an increase in fuel economy along with that signature Flowmaster performance.

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