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2004 GMC Sierra Exhaust, Mufflers & Tips

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Latest Customer Reviews

Flowmaster Exhaust Systems Reviews


Not bad

Reviewed By Cody H (SODDY DAISY, TN) Reviewed for a 2004 GMC Sierra —10/21/2014 7:08 PM

Glad i went with the 40 series version instead of the 50. Still not as loud as i thought it would be. Was boxed up well. Instalation was the worst part. Didn't exactly line up with the factory hangers perfect and had to put small hose clamps to keep the rubber hanger on the metal arm. No major difference in power or mpg. Main reason i purchased was for the flowmaster sound. It doesn't disappoint there. I would recommend having the exhaust welded after everything settles and you get it in place.

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Gibson Exhaust Performance Headers Reviews


Gibson Shorty Headers and Cat-Back Exhaust System

Reviewed By Stephen B (Fort Pierce, FL) Reviewed for a 2004 GMC Sierra —2/11/2014 5:53 AM

Previously installed a Gibson cat-back exhaust system , there was a noticeable sound and performance gain.Just installed a set of Gibson shorty headers , power is more linear but does not seem to have increased performance much. But both are a high quality product , fitment was great and installation was reasonably straight forward.

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aFe Exhaust Systems Reviews


aFe Exhaust for Duramax

Reviewed By Gregory B (North East, MD) Reviewed for a 2004 GMC Sierra —6/13/2013 11:37 AM

I purchased the aFe exhaust after reading a test article that documented HP and torque gains. Installed the system on GMC 3500 with Duramax. Very impressed with the quality and completeness of the kit. Installation was easy, even after losing the directions and fit is perfect. In fact, it took twice as long to get original system off. Sound quality is good - aggressive, but not annoying or droning. I could not be more pleased with the system, especially at the AutoAnything sale price.

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