Description
The Flowmaster American Thunder Cat-Back Exhaust System is engineered for 2018–2026 Jeep Wrangler JL 2- and 4-door models with the 3.6L engine, delivering moderate to aggressive exterior tone with minimal interior resonance. Designed for Jeep enthusiasts who want performance, style, and a stealthy look, this bolt-on dual-out rear system is emissions-legal and features high-quality 409 stainless steel construction.
The system includes a 2.50-inch mandrel-bent stainless steel inlet pipe, a specially designed stainless steel resonator, and the 80 Series™ crossflow muffler for optimal exhaust flow and aggressive tone. The dual 2.50-inch mandrel bent tailpipes terminate in large dual 4.00-inch black ceramic coated Flowmaster stainless steel tips for a modern, stealthy appearance. Installation is straightforward using all factory hanger locations and includes all necessary hardware. The system is backed by Flowmaster’s Lifetime Limited Warranty.
Key Features
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Dual 4.00-inch black ceramic coated exhaust tips
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Moderate to aggressive exterior performance tone
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80 Series crossflow performance muffler
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2.50-inch mandrel-bent stainless steel tubing
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Factory hanger locations for simple installation
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Specially designed resonator for minimal interior resonance
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Aggressive / moderate sound level
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Lifetime Limited Warranty
Fitment Information
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Fits 2018 Jeep Wrangler JL 2-door 3.6L
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Fits 2018 Jeep Wrangler JL 4-door 3.6L
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Fits 2019 Jeep Wrangler JL 2-door 3.6L
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Fits 2019 Jeep Wrangler JL 4-door 3.6L
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Fits 2020 Jeep Wrangler JL 2-door 3.6L
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Fits 2020 Jeep Wrangler JL 4-door 3.6L
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Fits 2021 Jeep Wrangler JL 2-door 3.6L
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Fits 2021 Jeep Wrangler JL 4-door 3.6L
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Fits 2022 Jeep Wrangler JL 2-door 3.6L
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Fits 2022 Jeep Wrangler JL 4-door 3.6L
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Fits 2023 Jeep Wrangler JL 2-door 3.6L
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Fits 2023 Jeep Wrangler JL 4-door 3.6L
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Fits 2024 Jeep Wrangler JL 2-door 3.6L
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Fits 2024 Jeep Wrangler JL 4-door 3.6L
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Fits 2025 Jeep Wrangler JL 2-door 3.6L
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Fits 2025 Jeep Wrangler JL 4-door 3.6L
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Fits 2026 Jeep Wrangler JL 2-door 3.6L
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Fits 2026 Jeep Wrangler JL 4-door 3.6L
Muffler Specifications
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Muffler Series: 80 Series Crossflow
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Muffler Type: Reflection / Crossflow
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Muffler Material: 409 Stainless Steel
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Muffler Shape: Oval
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Muffler Body Height: 4.00 inches
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Muffler Body Length: 15.00 inches
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Muffler Body Width: 9.50 inches
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Muffler Finish: Black High-Temperature Paint
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Muffler Inlet Diameter: 2.50 inches
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Muffler Outlet Diameter: 2.50 inches
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Muffler Outlet Quantity: 2
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Muffler Inlet Location: Offset
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Muffler Outlet Location: Dual
Pipe & Tip Specifications
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Main Piping Diameter: 2.50 inches
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Inlet Type: Clamp-On
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Tailpipe Outlet Diameter: 2.50 inches
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Tailpipe Quantity: 2
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Tip Material: 304 Stainless Steel
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Tip Finish: Black Ceramic Coating
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Tip Diameter: 4.00 inches
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Tip Length: 5.25 inches
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Tip Cut: Angled
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Tip Wall: Double Wall
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Tip Logo: Embossed
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Exit Style: Dual Out Rear
Additional Specifications
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Product Type: Exhaust System
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Part Type: Cat-Back Exhaust
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Sound Level: Aggressive / Moderate
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Clamps Included: Yes
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Heat Shield Included: No
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Spring Bolt Kit Included: No
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Valve Included: No
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CARB Compliant: Yes
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California Proposition 65: Yes (Chromium, hexavalent compounds)
