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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-17421
American Thunder Axle-Back Exhaust System 2005-2009 Ford Mustang 4.0L V6
$47895
Ships on 09/08/2026
Lowest Price GuaranteeFord Mustang V6
- American Thunder Axle-Back Exhaust System
- 2005-2009 Ford Mustang 4.0L V6
- 2.5" Tubing
- 3.5" Polished SS Tips
- Single Rear Exit
- 60 Series Delta Flow Muffler
- Aluminized Steel
Experience An Exhaust System Tuned for Performance and Tone
If you need an exhaust system that has been dyno tuned to produce maximum performance, look no further than Flowmaster's American Thunder Exhaust Systems. This line, designed for passenger cars, produces a range of systems that offer moderate to aggressive exhaust notes. Available in axle, cat, and header-back configurations, Flowmaster has you covered. To ensure durability and ease of installation, these kits are made from 16-gauge mandrel bent tubing and includes the necessary hangers and hardware.
Part TypeExhaust System
Product LineFlowmaster American Thunder Exhaust Systems for Cars
BrandFLOWMASTER
Package Height10.5
Package Width12.25
Package Length35.0
Weight21.35 PG
Muffler Body Diameter2.50 in.
Tailpipe Diameter (In.)2.5
Muffler Inlet Inside Diameter2.50 in.
Hangers IncludedYes
Main Piping Diameter2.50 in.
Tail Pipe QuantitySingle
Inlet TypeClamp-On
Tip CutSlant
Exhaust Tip Material304 Stainless Steel
Catalytic Converter Quantity0
Exit LocationRear
Inlet QuantityOne
Muffler Body Length13 in.
Sound LevelModerate
Muffler MaterialSteel
Muffler Body MaterialAluminized Steel
Exhaust Tip CutAngled
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorBlack
System FinishAluminized
Muffler Quantity1
Muffler Inlet Outside Diameter2.50 in.
Exit QuantityOne
Tip MaterialStainless steel
Muffler Flanged OutletNo
Tip Quantity1
Exhaust Tip ResonatedNo
Exhaust TypeSingle
Catalytic Converter IncludedNo
Heat Shield IncludedNo
Part CategoryExhaust Systems & Components
Hardware IncludedYes
Exhaust Tip WallSingle Wall
Exhaust Tip Quantity1
Exhaust Tip FinishPolished
Exhaust Tip EdgeRolled Edge Angle Cut
Valve IncludedNo
Muffler TypeChambered
Pipe MaterialAluminized Steel
Muffler Body Width10 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeOval
Mounting Bracket IncludedNo
Muffler Outlet Quantity1
Muffler FinishBlack High-Temperature Paint Finish
Inlet Diameter2.50 in.
Clamps IncludedYes
Muffler StyleChambered
Tip Outlet Size3.5 in (88.9 mm)
FinishAluminized
Exit StyleSingle Out Rear
Muffler Body Height5 in.
Tip IncludedYes
Clamping TypeFlat Band
Muffler Flanged InletNo
Spring Bolt Kit IncludedNo
Muffler Series60 Series Delta Flow
QuantitySold individually
Muffler IncludedYes
Exhaust Tip ConnectionWelded
System StyleRear axle-back
Tail Pipe Outlet Outside Diameter2.50 in.
Muffler ConfigurationSingle inlet/Single outlet
System MaterialSteel
Valve TypeNot Applicable
Tip Edge StyleRolled edge
Tip ShapeRound
Exhaust Tip Diameter3.50 in.
Part FitmentDirect Fit
Vendor Part Number17421
Package Qty1
Package TypeEA
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