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GMC Flowmaster Exhaust, Mufflers & Tips

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Latest Customer Reviews

Flowmaster Original 40 Series Mufflers Reviews


2016 GMC Sierra

Reviewed By Chris N (Las Cruces, NM) Reviewed for a 2016 GMC Sierra —6/13/2018 7:53 AM

I installed this by removing everything from the stock muffler back. Installed the series 40 exactly where the original muffler was and had exit pipe turn out just in front of the rear tire. Unless you were in the throttle really hard, you couldnt tell if it was a V8 or the V6.

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Flowmaster Exhaust Systems Reviews


John from Highland MI

Reviewed By John F (MILFORD, MI) Reviewed for a 2004 GMC Yukon XL —5/21/2018 10:34 PM

I ordered a Force II system to ensure a cat back compatible system. The system consisted of a resonator pipe, muffler, and tail pipe, all 3 in. diameter. Assembly was very straight forward with the parts all fitting nicely together. As a senior citizen working alone on the ground with the truck backed up on auto ramps, it probably took me about 4 hours. Most people could probably do it in two hours or less. The system is quieter than I expected but should be pretty efficient.

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Flowmaster Direct-Fit Catalytic Converters (50-State Legal) Reviews


Passing smog

Reviewed By Martin P (GALT, CA) Reviewed for a 1995 GMC Sierra —6/12/2017 3:31 AM

Sweetness

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