Flowmaster Original 40

If you like it loud, you will love the aggressive and powerful tone of Flowmaster’s Original 40 Series muffler, offered here in extra-durable stainless steel (80430402). Flowmaster’s original 2-chamber street muffler is constructed with MIG-welded 16 gauge S409 automotive-grade steel for exceptional durability, and comes with a limited lifetime warranty from Flowmaster. This muffler will give you that classic Flowmaster sound, with aggressive tone both inside and out. This is for the enthusiast who likes it LOUD.  

The stainless steel dual tailpipes are mandrel bent for decreased restriction, and the dual exhaust provides exceptional performance and reduced back pressure. We also include 45° angle turnouts for a stylish corner exit, and classic angle-cut stainless steel tips.  If you have been wanting to get more of everything out of your truck – more horsepower, more torque, more gas mileage, more sound — this performance stainless dual upgrade is the one for you.

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