Flowmaster Outlaw Series Race Muffler

Outlaw Muffler Shorty 409SS - 3 in. Center In 3 in. Center Out - Aggressive

PART# 815430S

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


Flowmaster's new 3.00 inch Outlaw "Shorty" Race Muffler is intended for race classes requiring mufflers but do not have a set sound reduction rule. The muffler has a 4.00 inch diameter body that is only 6.50 inches long. The muffler is constructed with 409S Stainless Steel.


  • Flowmaster Reliability
  • Race proven technology
  • Aggressive performance tone
  • Stainless steel construction


Body Height (in)4
Body Length (in)6.5
Body Width (in)4
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
Inlet Connection TypePipe Connection
Inlet Diameter (in)3
Inlet PositionCenter
Material409 Stainless Steel
Muffler SeriesOutlaw
Muffler TypeChambered
Outlet Diameter (in)3
Outlet PositionCenter
Product TypeRace Products
Sound LevelAggressive Sound
Type of MufflerChambered
Part Number815430S


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

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