Flowmaster Force II Axle-back Exhaust System 817437 2007-2011 Jeep Wrangler JK, 3.8L engine and 2/4 door models

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  • Regular price $396.86
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This Flowmaster Force II® Axle-back system is designed for the 2007-2011 Jeep Wrangler JK's with the 3.8L engine, and replaces the original transverse muffler located behind the rear axle using factory connections. Features include 2.50-inch mandrel-bent stainless steel tubing for maximum durability, uses the factory hanger locations for a quick and easy installation. The system includes a Super 50™ Series performance muffler with the mandrel-bent tailpipe tucked up high in the chassis protecting the exhaust from rocks and debris when out on the trail. The system is finished off with a large 3.00-inch brushed stainless steel tip and delivers a mild to moderate interior tone with a moderate deep exterior sound that is suited to customers looking for engine efficiency improvements without a lot of noise. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Covered by our Lifetime Limited Warranty for years of service.


  • Tucks up High in the Chassis for Protection Against Rocks
  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Dyno Tuned for Maximum Performance
  • 3.00-inch Brushed Stainless Steel Tip
  • Uses the Factory Hanger Locations
  • Mild Exterior Exhaust Tone
  • Lifetime Limited Warranty
  • Easy Installation


Brand Flowmaster
Emission Code 5
Exhaust Series Force II
Exit Position Single Rear Exit
Heat Shield No
Inlet Diameter (in) 2.5
Material 409 Stainless Steel
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Super 50 Series
Outlet Diameter (in) 2.5
Product Type Exhaust System
Single Dual Single
Sound Level Mild
System Type Axle-back
Tip Diameter (in) 3
Tip Quantity 1
Tubing Diameter (in) 2.5
UPC 700042023608
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required Yes
Part Number 817437