8218400 - Flowmaster Outlaw II Collector Muffler - default Image
8218400 - Flowmaster Outlaw II Collector Muffler - additional Image

Flowmaster Outlaw II Collector Muffler

Outlaw II Collector Muffler-409SSS -2 1/8 in. Center In. / 4.0 in. Center Out-Aggressive Sound

PART# 8218400

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Race Applications


Flowmaster's Scavenger Series Outlaw II Collector mufflers are designed to attach directly to the exhaust header primary tubes of race headers. These race mufflers are compact and are ideal for applications where minimal sound reduction is required, but a muffler rule is in effect. These mufflers are sold individually and are constructed of 409S Stainless Steel.


  • Stainless Steel Construction
  • Dyno tuned for maximum performance
  • Outlaw Race Muffler Technology
  • Compact Design


Automotive Item GradeHigh Performance
Body Diameter (in)5
Body Height (in)5
Body Length (in)6
Body Width (in)5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
FitmentDirect OE Replacement
Inlet Connection TypePipe Connection
Inlet Diameter (in)2.13
Inlet PositionCenter
MaterialStainless Steel
Muffler SeriesOutlaw
Muffler TypeReflection
Outlet Connection TypePipe Connection
Outlet Diameter (in)4
Outlet PositionCenter
Overall Length (in)6
Product TypeRace Products
Sound LevelAggressive Sound
Part Number8218400


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.

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