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1999 GMC Sierra Performance Mufflers

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Latest Customer Reviews

Flowmaster Super 44 Series Mufflers Reviews

Beautiful Sound

Reviewed By Rafael M (Melrose Park, IL) Reviewed for a 1999 GMC Sierra —7/3/2012 10:02 PM

Good quality muffler. Loud but not loud enough to get pulled over. Love the sound once I reach 2,000 rpm.

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Magnaflow Performance Mufflers Reviews

Exactly what I was looking for!

Reviewed By Jeremy S (SOUTHAVEN, MS) Reviewed for a 2015 GMC Sierra —3/5/2018 8:28 PM

The newer GM trucks have a lot going on with the exhaust, keeping them quiet as can be. I wanted to be able to hear the v8 without it being obnoxious, loud or having a drone at highway speeds. The 22" Magnaflow muffler is perfect, gives a nice deep tone and you can't really tell it's on there until you step on it. Very pleased with the purchase!

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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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