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Flowmaster Super 10 Series Chambered Muffler

Super 10 Series Stainless Steel - 2.50 Offset In / Dual Out - Aggressive Sound

PART# 8425810

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$134.00   Suggested Retail
$119.95   Your Price
Estimated shipping date: 10/26/2020
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Delta Flow
Aggressive sound


Flowmaster's latest version of its popular Super 10 Series muffler is now offered in a crossflow design. This 409S Stainless Steel muffler is designed to be mounted transversely and has a 2.50 inch inlet and dual 2.50 inch outlets. Like all Super 10 Series mufflers, this single chamber design delivers a powerful and aggressive tone inside and outside of the vehicle. This muffler is backed by Flowmaster's Lifetime Limited Warranty.


  • Flowmaster Chambered Technology
  • Flowmaster Reliability
  • Most Aggressive Tone Available
  • Stainless Steel Construction


Automotive Item GradeHigh Performance
Body Height (in)4
Body Length (in)8
Body Width (in)9.75
Emission Code5
Inlet Connection TypePipe Connection
Inlet Diameter (in)2.5
Inlet PositionOffset
Material409 Stainless Steel
Mount TypeUses New Hangers (Not Included)
Muffler SeriesSuper 10 Series
Muffler TypeChambered
Outlet Connection TypePipe Connection
Outlet Diameter (in)2.5
Outlet PositionDual
Overall Length (in)12.5
Product TypeStreet Mufflers
Sound LevelAggressive Sound
Type of ExhaustMuffler
Type of MufflerChambered
Vehicle TypeClassic Muscle Car
Late Model Muscle Car
Street Rod
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number8425810



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 Muffler - Some adaptation may be required.
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