Skip to main content
ASK OUR EXPERTS
1-866-464-6553

Flowmaster American Thunder Cat-back Exhaust System

Fits 2018-2024 Jeep Wrangler JL models with 3.6L engine. - Aggressive to moderate sound

Part # 817819 Be the first to write a review

Flowmaster American Thunder Cat-back Exhaust System

In Stock
Free Shipping - Lower 48 US States
$928.95
Add to Wishlist
Starting at $82 a month with Learn More
5

Emissions

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.

See Emissions Details
This Flowmaster American Thunder® Cat-back exhaust system for the 2018-2024 Jeep Wrangler JL 2 and 4-door models with the 3.6L engine is perfect for the person looking for a moderate to aggressive exterior and mild interior exhaust tone, with all of the performance benefits that you would expect from Flowmaster®. This bolt-on Dual Out Rear emissions-legal system features a 2.50-inch mandrel bent stainless inlet pipe, a specially designed stainless steel resonator to keep the interior resonance down to a minimum, a stainless steel 80 Series™ cross-flow muffler, and dual 2.50-inch mandrel bent tailpipes. The system finishes with large dual 4.00-inch black ceramic coated Flowmaster stainless steel tips for a stealthy modern look. The system is designed for a perfect fit and includes all necessary parts and hardware for easy installation you can do at home.

Features:

  • Large 4.00-inch Black Ceramic Coated Exhaust Tips
  • Moderate to Aggressive Exterior Performance Tone
  • 80 Series Cross-flow Performance Muffler
  • Mandrel-Bent Stainless Steel Tubing
  • Uses the Factory Hanger Locations
  • Minimal Interior Resonance
  • Lifetime Limited Warranty
  • Easy Installation

About Flowmaster

Shop the official site of Flowmaster for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Available at Holley.com!

Brand Flowmaster
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)15
Muffler ColorBlack
Muffler FinishPainted
Muffler Inlet Diameter (in)2.5
Muffler Inlet LocationOffset
Muffler Material409S Stainless Steel
Muffler Outlet Diameter (in)2.5
Muffler Outlet LocationDual Outlet - Offset (Same Side)
Muffler Overall Length (in)32
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series80 Series Crossflow
Muffler ShapeOval
Muffler TypeReflection
Product TypeExhaust System
Single DualDual
Sound LevelAggressive / Moderate
System TypeCat-back
Tip CutAngle
Tip Diameter (in)4
Tip Edge StyleCut
Tip FinishBlack Ceramic
Tip Length (in)5.25
Tip LogoEmbossed
Tip Material304 Stainless
Tip Quantity2
Tip ShapeRound
Tubing Diameter (in)2.5
Tubing Material409S Stainless Steel
UPC700042038091
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817819
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 all 2018-2024 Jeep Wrangler JL 2 & 4-door models with the 3.6L engine, including the 2020 Sahara with the Hybrid E-torque option.
Reviews

    Your Review

    *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.