Delivery info

From then, delivery is generally is the same day / 2 days (depending on your location). Cut off time 2 PM PST.

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Flowmaster 40 Series Universal Muffler 2.5" Inlet/Outlet -Street Muffler- 425404

Flowmaster 40 Series Universal Muffler 2.5" Inlet/Outlet -Street Muffler- 425404

The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound, this is the muffler for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
Aggressive Sound Exterior Exhaust Tone
No internal packing to blowout
Durable fully welded 16 gauge aluminized steel
Excellent Street/Strip and Off Road application

VEHICLE FITMENT

Universal Muffler - Not a direct fit. Some adaptation required.

Flowmaster has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster’s founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers." Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.

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