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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-817749
American Thunder Axle-Back Exhaust System 2015-2017 Mustang GT 5.0L V8
$94995
Ships on Sep 04, 2026
Lowest Price GuaranteeFord Mustang V8
- American Thunder Axle-Back Exhaust System
- 2015-2017 Mustang GT 5.0L V8
- 3" Stainless Steel Tubing
- 4" Polished Stainless Steel Double Wall Tips
- Dual Out Rear Exit
- Super 44 Series Mufflers
- 409S Stainless 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 Height12.0
Package Width15.0
Package Length58.0
Weight43.7 PG
Muffler Inlet Inside Diameter3 in.
Hangers IncludedYes
Main Piping Diameter3 in.
Tail Pipe QuantityDual
Inlet TypeClamp-On
Exhaust Tip Material304 Stainless Steel
Catalytic Converter Quantity0
Tip FinishPolished
Muffler Body Length13.25 in.
Sound LevelAggressive / Moderate
Muffler Body Material409 Stainless Steel
Exhaust Tip CutAngled
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorBlack
Muffler Quantity2
Muffler Inlet Outside Diameter3.13 in.
Muffler Flanged OutletNo
Tip Quantity2
Exhaust Tip ResonatedNo
Exhaust TypeDual
Catalytic Converter IncludedNo
Heat Shield IncludedNo
Part CategoryPerformance Parts
Exhaust Tip WallDouble Wall
Exhaust Tip Quantity2
Exhaust Tip FinishPolished
Exhaust Tip EdgeAngle Cut
Valve IncludedNo
Muffler TypeChambered
Pipe Material409 Stainless Steel
Muffler Body Width9.50 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeOval
Mounting Bracket IncludedNo
Muffler Outlet Quantity1
Muffler FinishBlack High-Temperature Paint Finish
Mount TypeFlanged
Inlet Diameter2.50 in.
Clamps IncludedYes
FinishNatural
Exit StyleDual Out Rear
Muffler Body Height4 in.
Clamping TypeFlat Band
Muffler Flanged InletNo
Spring Bolt Kit IncludedNo
Muffler SeriesSuper 44
Muffler IncludedYes
Exhaust Tip ConnectionWelded
Tail Pipe Outlet Outside Diameter3 in.
Valve TypeNot Applicable
Exhaust Tip Diameter4 in.
Part FitmentDirect Fit
Vendor Part Number817749
Package Qty1
Package TypeEA
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EASY KITS
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