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Flowmaster

Flowmaster American Thunder Cat-back Exhaust System

2015-2021 Ford Mustang with 2.3L Ecoboost engine.

Part # 817750 Be the first to write a review
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The Flowmaster American Thunder® Cat-back exhaust system for the 2015-2021 Ford Mustang with the 2.3L Ecoboost engine is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster®. This bolt-on emissions legal system is constructed from 409S stainless steel and features a single 2.50-inch mandrel-bent inlet tube that splits into duals leading into a pair of our race proven 3.00-inch inlet Outlaw® mufflers for both maximum performance and sound. The system is finished off with dual 4.00-inch polished stainless steel tips that exit within the rear bumper valence. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty and includes all necessary parts and hardware for an easy installation you can do at home. Note: Fits both hardtops and convertible models.

Features:

  • Race Proven Outlaw Muffler Technology
  • Dyno Tuned For Maximum Performance
  • Deep Aggressive Performance Tone
  • Uses the Factory Hanger Locations
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Mandrel-bent Tubing
  • Easy Installation

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

2WD/4WDRWD
Brand Flowmaster
Catalytic Converter IncludedNo
ColorBlack
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)3
Material409 Stainless Steel
Mount TypeFlanged
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesOutlaw
Muffler TypeWelded Baffle
Outlet Diameter (in)3
Product TypeExhaust System
ShapeOval
Single DualDual
Sound LevelAggressive / Moderate
System TypeCat-back
Tip CutAngle
Tip Diameter (in)4
Tip Edge StyleCut
Tip FinishPolished
Tip Length (in)5.25
Tip LogoEmbossed
Tip MaterialStainless Steel
Tip Quantity2
Tip ShapeRound
Tubing Diameter (in)2.25/3
Tubing MaterialStainless Steel
UPC700042032327
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817750
5

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.

Fits 2015-2021 Ford Mustang with 2.3L Ecoboost engine. Both coupes and convertible
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