Free shipping on ALL orders! - Details
2007-11 Jeep Wrangler JK 3.8L - Install: Force II Axle-back Exhaust System 817437YouTube Button

Flowmaster Force II Axle-back Exhaust System

2007-2011 Jeep Wrangler JK, 3.8L engine and 2/4 door models.

PART# 817437

Be the first to write a review
$436.00   Suggested Retail
$391.95   Your Price
Estimated shipping date: 11/30/2020
Email Me When Available
Free Shipping
Add to Wish List

Starting at $35 a month with Learn More
Mild sound


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


Emission Code5
Exhaust SeriesForce II
Exit PositionSingle Rear Exit
Heat ShieldNo
Inlet Diameter (in)2.5
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualSingle
Sound LevelMild
System TypeAxle-back
Tip Diameter (in)3
Tip Quantity1
Tubing Diameter (in)2.5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817437



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 2007-2011 Jeep Wrangler JK, 3.8L engine and 2/4 door models.


We Suggest

      *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

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

       X  Roadkill Buick Sweepstakes
       X  Roadkill Buick Sweepstakes