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GMC Flowmaster Exhaust, Mufflers & Tips

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Latest Customer Reviews

Flowmaster 50 Series Delta Flow Mufflers Reviews


My flowmaster

Reviewed By Mark M (Center Valley, PA) Reviewed for a 2015 GMC Sierra —4/3/2016 2:28 PM

Easy install , on the quiet side but .starting to get louder the longer it is on

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Flowmaster 40 Series Delta Flow Mufflers Reviews


Just what I expected !!!!

Reviewed By john b (potomac, IL) Reviewed for a 2005 GMC Envoy —3/31/2016 11:37 AM

It brings the 5.3 alive sound wise and gas mileage has improved alittle bit

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Flowmaster Super 10 Series Mufflers Reviews


Awesome!!

Reviewed By Jonah B (Tryon, OK) Reviewed for a 1991 GMC Sierra —1/20/2016 8:30 PM

It's soooo loud it vibrates my butt hole!!

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