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Flowmaster

Flowmaster American Thunder Axle-Back Exhaust System

Part # 818162

Fits 2024-2026 Ford Mustang GT 5.0-liter and EcoBoost 2.3L, American Thunder Axle-Back 3.0-inch Stainless Steel Exhaust System, 4.0-inch Dual Polished Tips

Flowmaster American Thunder Axle-Back Exhaust System

In Stock
Free Shipping - Lower 48 US States
Advertised Price $1,126.95
$619.80
Save $507.15
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5

Emissions

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.

See Emissions Details
Flowmaster introduces our American Thunder axle-back exhaust system for the 2024-2026 Ford Mustang GT with the 5.0-liter engine or the EcoBoost 2.3L engine and the standard factory non-valved exhaust system. This system uses the Super 44 series mufflers for an aggressive exhaust tone and increased performance. Maximum dyno gains of up to 8 hp and 6 lb-ft were measured at the rear wheels. 3.00-inch mandrel bent 409 stainless steel tubing is used to maximize exhaust flow and durability. Dual 4.00-inch polished stainless steel tips are used to add a custom look to this iconic vehicle. All the necessary hardware is included and factory mounting locations are used for an easy installation. Fits both coupes and convertibles. Backed by Flowmaster's Lifetime Limited Warranty.

Features:

  • Max increases of up to 8 hp and 6 lb-ft over the stock exhaust at the rear wheels
  • Super 44 series performance muffler offers a deep powerful sound and increased performance
  • 409 stainless steel construction delivers extra durability and improved long-term corrosion resistance
  • Uses factory hanger locations for easy installation
  • 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power
  • Includes all necessary hardware for an at home installation
  • Dual 4.00-inch polished steel tips add a custom look
  • Lifetime Limited Warranty

About Flowmaster

Shop the complete line of Flowmaster products for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Available at Holley.com!

Brand Flowmaster
California Proposition 65Yes
CARB (California) CompliantYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeFlat Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip ColorSilver
Exhaust Tip ConnectionWelded
Exhaust Tip CutAngled
Exhaust Tip Diameter4.00 IN
Exhaust Tip EdgeAngle Cut
Exhaust Tip FinishPolished
Exhaust Tip IntercooledNo
Exhaust Tip Length5.25 IN
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity2
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallDouble Wall
Exit StyleDual Out Rear
FinishPainted
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Inlet TypeClamp-On
Main Piping Diameter3.00 IN
Mount TypeUses Factory Hangers
Mounting Bracket IncludedNo
Muffler (Left) Body Height4.00 IN
Muffler (Left) Body Length10.25 IN
Muffler (Left) Body Width9.50 IN
Muffler (Left) TypeReflection
Muffler (Right) Body Height4.00 IN
Muffler (Right) Body Length10.25 IN
Muffler (Right) Body Width9.50 IN
Muffler (Right) TypeReflection
Muffler Body Height4.00 IN
Muffler Body Length10.25 IN
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler Body Width9.50 IN
Muffler ColorBlack
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler IncludedYes
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter3.00 IN
Muffler Inlet LocationCenter
Muffler Inlet Outside Diameter3.13 IN
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Diameter3.00 IN
Muffler Outlet LocationDual
Muffler Outlet Quantity1
Muffler Overall Length16.00 IN
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44
Muffler TypeReflection
Part TypeExhaust System
Pipe ColorBlack
Pipe Material409 Stainless Steel
Product TypeExhaust System
Sound LevelAggressive / Moderate
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter3.00 IN
Tail Pipe Quantity2
Dual
Tail Pipe Tapered OutletNo
Tip LogoEmbossed
TypeAxle-Back
Valve IncludedNo
Valve TypeNot Applicable
UPC090127844700
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
Part Number818162
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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.
Instructions - Flowmaster Warranty 26 Update.pdf
Instructions - 818162_instructionsV2.pdf

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*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.

Flowmaster American Thunder Axle-Back Exhaust System
Flowmaster American Thunder Axle-Back Exhaust System
Advertised Price $1,126.95
$619.80
Save $507.15