Enhance the performance and sound of your 2018–2024 Dodge Durango 6.4L with the Flowmaster American Thunder Cat-Back Exhaust System. Designed for an aggressive exterior tone while maintaining a comfortable interior sound, this system delivers improved horsepower, torque, and the legendary Flowmaster exhaust note.

Constructed from durable 16-gauge mandrel-bent 409 stainless steel tubing, the system flows into Flowmaster’s Super 44 Series mufflers. These mufflers provide a deep, aggressive to moderate tone while optimized resonators control interior sound levels for a refined driving experience. The exhaust exits through dual 4.00-inch polished 304 stainless steel tips for a bold, custom appearance.

The system installs easily using factory hanger locations and includes all necessary hardware for at-home installation. Designed to maximize performance, it delivers up to 12 hp and 20 lb-ft of torque gains at the rear wheels. Backed by Flowmaster’s Lifetime Limited Warranty, this cat-back system ensures long-term reliability and performance.

Key Features

• Super 44 Series mufflers for aggressive to moderate sound and performance gains
• 16-gauge mandrel-bent 3.00-inch 409 stainless steel tubing
• Dual 4.00-inch polished 304 stainless steel tips for a custom look
• Tuned resonators for controlled interior sound
• Max dyno gains: 12 hp and 20 lb-ft at the rear wheels
• Uses factory hanger locations for easy installation
• Includes all necessary hangers and hardware
• Backed by Flowmaster Lifetime Limited Warranty

Specifications

• Brand: Flowmaster
• California Proposition 65: Yes
• Chemical Name: Chromium (hexavalent compounds)
• CARB Compliant: Yes
• Catalytic Converter Included: No
• Category: Exhaust
• Clamps Included: Yes
• Emission Code: 5
• Exhaust Series: American Thunder
• Exhaust Tip Diameter: 4.00 in
• Exhaust Tip Finish: Polished
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Quantity: 2
• Exhaust Tip Shape: Round
• Exit Style: Dual Out Rear
• Main Piping Diameter: 3.00 in
• Muffler Series: Super 44
• Muffler Body Material: 409 Stainless Steel
• Muffler Body Shape: Oval
• Muffler Finish: Black High-Temperature Paint
• Muffler Quantity: 2
• Sound Level: Aggressive / Moderate
• Tail Pipe Quantity: 2
• Type: Cat-Back
• Valve Included: No

Fitment 

Compatible Vehicles:
• 2018–2024 Dodge Durango 6.4L

Notes / Requirements:
• Installation uses factory hanger locations
• Includes all necessary parts and hardware for at-home installation