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GMC S15 Pickup Performance Mufflers

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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 Super 50 Series SUV Mufflers Reviews


Flowmaster 50 series

Reviewed By Isaac W (Hempstead, NY) Reviewed for a 2003 GMC Yukon XL —2/24/2017 1:41 PM

very happy with the overall online purchase experience... I had the dual exhaust and muffler professionally installed..Sounds great... Thank You

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Flowmaster Super 44 Series Mufflers Reviews


Super 44

Reviewed By Kade H (SPRINGVILLE, UT) Reviewed for a 2015 Toyota Tacoma —7/14/2018 10:11 AM

Great muffler, great sound. I only notice drone at 1500 rpm. Other than that it's awesome!

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