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2012 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster 50 Series Big Block Mufflers Reviews


Truck muffler

Reviewed By Douglas H (miamisburg, OH) Reviewed for a 2012 GMC Sierra —4/11/2013 9:08 PM

Just like you described. No complaints.

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Flowmaster Super 40 Series Mufflers Reviews


Great sound

Reviewed By Blake A (Beaumont, TX) Reviewed for a 2012 GMC Sierra —5/29/2012 3:44 AM

this muffler has a great deep sound. It's not to loud but it's loud enough. Great product and great price at autoanything!

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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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