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2007 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster 50 Series Delta Flow Mufflers Reviews

Great Muffler

Reviewed By Jeffrey H (LUVERNE, AL) Reviewed for a 2007 GMC Sierra —12/30/2012 6:18 AM

Sounds great. Nice rumble at idle and not too loud while driving. Will definitely keep buying auto anything and flowmaster products

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Flowmaster 70 Series Big Block II Mufflers Reviews

nice sound

Reviewed By brandon h (Gowrie, IA) Reviewed for a 2007 GMC Sierra —8/28/2010 10:48 AM

Sounds good on 07 sierra. Not too loud just enough to know its not stock.

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Magnaflow XL Turbo Mufflers Reviews

Now my truck sounds like a truck

Reviewed By Robert O (Apple Valley, CA) Reviewed for a 2014 GMC Sierra —6/9/2017 1:07 AM

The only mufflers I buy are these... Mellow at Idle but you when you cut her lose these mags sound amazing, not like those beer can mufflers from Santa Rosa Ca

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