Description
The Flowmaster American Thunder Cat-Back Exhaust System is engineered for 2011–2014 Dodge Charger R/T and Chrysler 300 models equipped with the 5.7L Hemi engine. This complete dual exhaust system is designed for enthusiasts who want an aggressive exhaust tone that delivers strong performance sound both inside and outside the vehicle.
Manufactured from mandrel-bent 16-gauge 409 stainless steel tubing, this system maximizes exhaust flow for improved throttle response, horsepower, torque, and overall engine efficiency. Specially selected Super 40 Series chambered mufflers provide a deep, aggressive exhaust note while maintaining Flowmaster’s signature performance character.
Designed to connect directly after the factory catalytic converters, the American Thunder system includes all required hangers, clamps, and hardware for a straightforward bolt-on installation. With a dual rear exit configuration, this system delivers a powerful performance sound and a clean, factory-style fitment suitable for daily driving or spirited performance use.
Key Features:
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Complete dual cat-back exhaust system
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Mandrel-bent 16-gauge 409 stainless steel tubing
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Super 40 Series chambered performance mufflers
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Aggressive exterior and interior exhaust tone
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Improves throttle response, horsepower, torque, and mileage
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Connects directly after the factory catalytic converters
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Dual rear exit exhaust configuration
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Includes hangers, clamps, and installation hardware
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Designed for easy bolt-on installation
Fitment:
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Vehicle: 2011 Dodge Charger R/T
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Vehicle: 2012 Dodge Charger R/T
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Vehicle: 2013 Dodge Charger R/T
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Vehicle: 2014 Dodge Charger R/T
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Vehicle: 2011 Chrysler 300
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Vehicle: 2012 Chrysler 300
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Vehicle: 2013 Chrysler 300
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Vehicle: 2014 Chrysler 300
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Engine: 5.7L Hemi V8
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Drivetrain: 2WD
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Exhaust Type: Cat-Back
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Exit Style: Dual out rear
Specifications:
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Brand: Flowmaster
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Exhaust Series: American Thunder
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Product Type: Exhaust System
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Part Type: Exhaust System
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Category: Exhaust
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Sub Category: Exhaust and Tail Pipes
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Pipe Material: 409 stainless steel
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Pipe Finish: Natural
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Pipe Color: Silver
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Main Piping Diameter: 2.50 inches
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Inlet Diameter: 2.50 inches
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Clamping Type: Flat band
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Clamps Included: Yes
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Hangers Included: Yes
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Mounting Bracket Included: No
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Muffler Series: Super 40 Series
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Muffler Type: Chambered
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Muffler Quantity: 2
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Muffler Body Material: 409 stainless steel
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Muffler Body Shape: Oval
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Muffler Body Dimensions: 13.50" L x 10.00" W x 5.00" H
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Muffler Finish: Black high-temperature paint
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Muffler Inlet Connection: Slip-fit
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Muffler Inlet Inside Diameter: 2.50 inches
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Muffler Inlet Outside Diameter: 2.63 inches
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Muffler Outlet Connection: Slip-fit
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Muffler Outlet Quantity: 1
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Exhaust Tip Diameter: 2.50 inches
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Exhaust Tip Shape: Round
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Exhaust Tip Quantity: 2
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Tail Pipe Quantity: 2
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Tail Pipe Outlet Outside Diameter: 2.50 inches
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Tail Pipe Tapered Outlet: No
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Sound Level: Aggressive
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Drive: 2WD
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CARB Compliant: Yes
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California Proposition 65: Chromium (hexavalent compounds)
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Emission Code: 5
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Valve Included: No