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2018-20 Jeep Wrangler JL, 2.0L, 3.6L - American Thunder Axle-back Exhaust System 817837YouTube Button

Flowmaster American Thunder Axle-back Exhaust System

2018-2020 Jeep Wrangler JL, 2.0L Turbo or 3.6L engine. Muffler delete. Both 2 door & 4 door models.

PART# 817837

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$142.00   Suggested Retail
$126.95   Holleydays Price
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Moderate sound


The Flowmaster® American Thunder® Axle-back exhaust system for the 2018-2020 Jeep Wrangler JL is perfect for the person looking for maximum performance and ground clearance. The 2.50-inch tailpipe features a mandrel bent 409 stainless steel tailpipe finished off with a 3.00-inch polished 304 stainless steel tip and fits both 2 and 4 door models with the 2.0L Turbo or the 3.6L engine. This system replaces the factory transverse muffler reducing weight, improves ground clearance, and provides a moderate sound level that is not offensive or will be considered loud by most people. Because this system tucks the tailpipe up high, an aftermarket metal bumper is generally recommended. The exhaust system is covered by our Lifetime Limited Warranty. Designed for a perfect fit, this system includes all necessary parts and hardware for easy and quick installation you can do at home in about 15 minutes.


  • Provides Maximum Off Roading Clearance
  • Mandrel-bent 409 Stainless Steel Tubing
  • Uses the Factory Hanger Locations
  • All Stainless Steel Construction
  • Moderate Sound Level
  • Flowmaster Quality
  • Easy Installation


Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionSingle Rear Exit
Heat Shield IncludedNo
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler Part NumberKit Only
Muffler SeriesNone
Product TypeExhaust System
Single DualSingle
Sound LevelModerate
System TypeAxle-back
Tip CutAngle
Tip Diameter (in)3
Tip Edge StyleCut
Tip FinishPolished
Tip Length (in)3.25
Tip LogoNone
Tip Material304 Stainless
Tip Quantity1
Tip ShapeRound
Tubing Diameter (in)2.5
Tubing Material409S Stainless Steel
California Proposition 65 Chemical NameChromium
California Proposition 65 RequiredYes
Part Number817837



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

Fits 2018-2020 Jeep Wrangler JL, 2.0L Turbo or 3.6L engine. Both 2 door & 4 door models.


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         X  Holleydays 2020 20% off and DD
         X  Holleydays 2020 20% off and DD