The Flowmaster Outlaw Extreme Cat-Back Exhaust System is engineered to deliver maximum off-road performance and an aggressive exhaust tone for 2007–2018 Jeep Wrangler JK models equipped with the 3.6L or 3.8L engine. Designed for drivers who demand increased power, improved clearance, and a bold sound profile, this system uses a compact Outlaw Series muffler to produce Flowmaster’s deepest and most aggressive tone.

Built from durable 3.0-inch mandrel-bent 409 stainless steel tubing, the system is designed to resist corrosion and maintain strong exhaust flow. The dump-style turndown exit is positioned immediately after the muffler, eliminating the over-axle tailpipe to significantly improve departure angle and ground clearance—perfect for rock crawling, trail running, and extreme off-road conditions.

Installation is simple thanks to factory hanger compatibility, and all required hardware is included. Backed by Flowmaster’s Lifetime Limited Warranty, this system provides an ideal balance of durability, performance, and extreme off-road capability.

Fitment 

Fits the following:

• 2007–2018 Jeep Wrangler JK with 3.6L engine
• 2007–2018 Jeep Wrangler JK with 3.8L engine

Features

• Outlaw Series muffler delivers deep, powerful, aggressive sound
• 409 stainless steel construction for durability and corrosion resistance
• Uses factory hanger locations for easy installation
• 3.0-inch mandrel-bent stainless steel tubing maintains high exhaust flow
• Includes all required hardware for at-home installation
• Dump-style exit improves ground clearance and departure angle
• Lifetime Limited Warranty

Technical Specifications

• Weight: 15.7
• Length: 50
• Width: 15.1
• Height: 10
• Brand: Flowmaster
• California Proposition 65: Yes
• California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
• CARB Compliant: Yes
• Category: Exhaust
• Clamping Type: Flat Band
• Clamps Included: Yes
• Emission Code: 5
• Exhaust Series: Outlaw Extreme
• Exhaust Tip Diameter: 3.00 in
• Exhaust Tip Intercooled: No
• Exhaust Tip Shape: Round
• Exit Style: Single Out Dump
• Finish: Natural
• Gasket or Seal Included: No
• Grade Type: Performance
• Hangers Included: Yes
• Inlet Type: Clamp-On
• Main Piping Diameter: 3.00 in
• Mount Type: Uses Factory Hangers
• Mounting Bracket Included: No
• Muffler Included: Yes
• Muffler Quantity: 1
• Muffler Series: Outlaw
• Muffler Type: Reflection
• Muffler Body Diameter: 4.00 in
• Muffler Body Height: 4.00 in
• Muffler Body Length: 10.50 in
• Muffler Body Material: 409 Stainless Steel
• Muffler Body Shape: Round
• Muffler Body Width: 4.00 in
• Muffler Color: Silver
• Muffler Finish: Black High-Temperature Paint
• Muffler Inlet Connection: Slip-Fit
• Muffler Inlet Inside Diameter: 3.00 in
• Muffler Inlet Outside Diameter: 3.13 in
• Muffler Inlet Location: Center
• Muffler Outlet Diameter: 3.00 in
• Muffler Outlet Location: Center
• Muffler Outlet Quantity: 1
• Muffler Overall Length: 23.60 in
• Muffler Part Number: Kit Only
• Pipe Color: Silver
• Pipe Material: 409 Stainless Steel
• Product Type: Exhaust System
• Sound Level: Aggressive
• Spring Bolt Kit Included: No
• Sub Category: Exhaust and Tail Pipes
• Tail Pipe Outlet Outside Diameter: 3.00 in
• Tail Pipe Quantity: 1
• Tail Pipe Tapered Outlet: No
• Type: Cat-Back
• Valve Included: No
• Valve Type: Not Applicable