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Flowmaster American Thunder Cat-back Exhaust System

2017-2020 Dodge Charger R/T, Daytona models with the 5.7L Hemi engine and integrated rear exhaust bezels

PART# 817778

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$882.00   Suggested Retail
$792.95   Your Price
Estimated shipping date: 12/31/2020
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Aggressive to moderate sound


This Flowmaster American Thunder® cat-back exhaust system for the 2017-2020 Dodge Charger R/T and Daytona models with 5.7L Hemi engine is perfect for the person looking for an aggressive exterior sound level with all of the performance benefits that you would expect from Flowmaster®. This bolt-on 409S stainless steel system features a dual 3.00-inch mandrel-bent Scavenger Series® X-Pipe for maximum performance flowing into a pair of specially designed Super 40® Series mufflers with 3.50-inch internals for maximum power and exterior sound quality, but with a moderate but pleasant interior tone at cruising speeds. Other features include dual 3.00-inch mandrel-bent tailpipes which are designed to re-use the factory exhaust valves and exit in the factory exhaust tips located in the rear valance. The tailpipes are a two-piece design and have no resonators. This system includes all necessary parts, hardware, and instructions for an easy installation.


  • Specially Designed Larger Muffler Internals for Powerful Deep Sound
  • Designed to Re-use the Factory Exhaust Valves
  • Uses the Factory Hanger Locations
  • Scavenger X-Pipe Cross-over Pipe
  • Stainless Steel Construction
  • Lifetime Limited Warranty


Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear
Heat ShieldNo
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler Body Length (in)13.5
Muffler ColorBlack
Muffler FinishPainted
Muffler InletOffset
Muffler Inlet Diameter (in)3
Muffler Material409S Stainless Steel
Muffler OutletCentered
Muffler Outlet Diameter (in)3
Muffler Overall Length (in)19.5
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 40 Series
Muffler ShapeOval
Muffler TypeReflection
Product TypeExhaust System
Single DualDual
Sound LevelAggressive / Moderate
System TypeCat-back
Tubing Diameter (in)3
Tubing Material409S Stainless Steel
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817778



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

This kit only fits vehicles with integrated rear exhaust bezels; it does not fit vehicles with traditional bumper/tip cutouts. Does NOT fit the Pursuit model.


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