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2003 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster Super 50 Series SUV Mufflers Reviews


Everything I'd hoped for

Reviewed By D. Thomas B (Topeka, KS) Reviewed for a 2003 GMC Sierra —4/10/2007 7:20 PM

Had Midas install as I can't weld. Sound is cool, but not obnosious. Performance seems improved, but I added this with a performance chip and so can't judge the muffler on its own. I am most satisfied.

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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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Flowmaster Super 10 Series Mufflers Reviews


Not too shabby

Reviewed By Zackary A (BINGHAMTON, NY) Reviewed for a 2015 GMC Sierra —4/14/2017 8:19 PM

Too quiet with just the muffler . Had to cut out the resonator. Sounds pretty throaty now probably perfect for a lot of people .

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