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GMC Flowmaster Exhaust, Mufflers & Tips

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Latest Customer Reviews

Flowmaster Y-Pipe Reviews

Flowmaster Y-Pipe review

Reviewed By michael s (point pleasant, NJ) Reviewed for a 1988 GMC S15 Pickup —10/25/2017 5:02 AM

This piece is made of a heavy steel that' going to last seemingly forever. It has great flow characteristics and fit my needs perfectly. Flowmaster products are "top shelf" quality.

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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


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Flowmaster Super 40 Series Mufflers Reviews

Great sound and gas mileage

Reviewed By Andrew V (EAST WINDSOR, CT) Reviewed for a 2013 GMC Sierra —10/11/2013 8:04 AM

Shipped very fast i literally got an email saying it was shipped and a txtfrom my wife that it was delivered at nearly the same time. Noticeable better gas mileage i had the same muffler on my last gmc truck and will continue to use super 40 mufflers

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