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GMC Flowmaster Exhaust, Mufflers & Tips

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Latest Customer Reviews

Flowmaster Direct-fit Catalytic Converters - 49-State Legal Reviews


passed emissions

Reviewed By Jorge R (Farmersville, TX) Reviewed for a 1994 GMC C/K 1500 —11/6/2014 6:19 AM

The angle was off a little. I made it work but connecting to my exhaust was/is causing vibration against the frame.

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Flowmaster 70 Series Big Block II Mufflers Reviews


flowmaster 70

Reviewed By AJ S (COLUMBIA, MO) Reviewed for a 2012 GMC Sierra —9/9/2014 10:49 AM

product exactly as expected

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Flowmaster 50 Series Delta Flow Mufflers Reviews


Flowmaster 50 series

Reviewed By Chad H (Lake Charles, LA) Reviewed for a 2013 GMC Sierra —4/24/2014 9:14 AM

Too loud for my taste. I bought the 50 series so that I would have little interior noise, I am disappointed with that aspect and also the exterior noise level. Pulling a trailer in two mode, I now have a irritating resonance. Will most likely go back with my OEM.

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