Flowmaster American Thunder Axle-Back Exhaust System 817942 2007-2018 Jeep Wrangler JK with 3.6L/3.8L, No Muffler

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  • Regular price $132.95
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The Flowmaster American Thunder Axle-back exhaust system for the 2007-2018 Jeep Wrangler JK is perfect for the enthusiast looking for maximum performance and ground clearance. The 2.50-inch tailpipe features a mandrel bent 409 stainless steel design for performance and corrosion resistance. The tailpipe is finished off with a 3.00-inch polished 304 stainless steel tip and fits both 2 and 4 door models with the 3.6L or 3.8L engine. This system replaces the factory transverse muffler reducing weight, improves ground clearance, and provides a moderate sound level. 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.


  • Max Dyno Gains of 5 HP and 7 Lb.Ft. Torque
  • Provides Maximum Clearance for Off-Roading
  • Mandrel Bent Pipe Increases Exhaust Flow and Performance
  • Stainless Steel Construction Offers Great Corrosion Resistance
  • Utilizes the Factory Mounting Points for an Easy Installation
  • Moderate Sound Level
  • Backed by Flowmaster’s Lifetime Limited Warranty


Brand Flowmaster
Emission Code 5
Exhaust Series American Thunder
Exit Position Single Out Rear
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Muffler Part Number N/A
Muffler Series Not Included
Product Type Exhaust System
Single Dual Single
Sound Level Moderate
System Type Axle-back
Tip Cut Angle
Tip Diameter 3
Tip Edge Style Cut
Tip Finish Polished
Tip Length 4.75
Tip Logo Embossed
Tip Material 304 Stainless
Tip Quantity 1
Tip Shape Round
Tip Style Single Wall
Tubing Diameter (in) 2.5
Tubing Material 409S Stainless Steel
UPC 090127100530
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required Yes
Part Number 817942