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GMC Performance Mufflers

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Latest Customer Reviews

Flowmaster 70 Series Big Block II Mufflers Reviews

Flowmaster 70- 2014 GMC Sierra

Reviewed By Ruben G (WESLACO, TX) Reviewed for a 2014 GMC Sierra —5/13/2019 8:22 PM

These mufflers are perfect. Not to loud or crazy drone. Quiet while cruising and moderate roar when you open up the throttle.

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Flowmaster 50 Series Delta Flow Mufflers Reviews

Nice sound

Reviewed By Mark M (KATY, TX) Reviewed for a 2001 GMC Sonoma —10/10/2018 1:02 AM

Was worried that it would be to loud but gives a nice mild sound to my little 2.2L motor. Seem to run smoother on open road with less up shift. Used stock pipes 2.25" in and 2.25" out

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Flowmaster Super 10 Series Mufflers Reviews

Love it

Reviewed By Bill E (HARRISON, TN) Reviewed for a 2001 GMC Yukon —9/29/2018 5:18 AM

The super 10 sounds great, loud but not too loud. Went from a Super 44 to a Super 10 and don't regret it one bit, if you're on the fence, get it.

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