Flowmaster Outlaw Cat-back Exhaust System 817818 All 2018-2021 Jeep Wrangler JL Unlimited 4-door models with 3.6L engine. High Clearance

  • Sale
  • Regular price $413.96
Shipping calculated at checkout.

This Flowmaster® Outlaw® Cat-back exhaust system replaces the factory transverse muffler on 2018-2021 Jeep Wrangler Unlimited 4-door models with the 3.6L engine, including the Sahara 3.6L with Hybrid E-torque option. The system relocates the muffler into a position right behind the catalytic converter where it is tucked up into the frame and out of harm's way when navigating rocky terrain. The system is constructed from 409S stainless steel, features a race-proven Outlaw series muffler for an aggressive exterior with a moderate interior sound level in the cab and the single 2.50-inch mandrel-bent stainless steel tailpipe is re-routed to run up and over the rear sway bar and exits up high at the rear bumper to provide maximum clearance for extreme crawling. The system is finished off with a polished 3.00-inch stainless steel tip. Note: Does Not fit 2-door models.


  • Race-proven Outlaw Performance Muffler
  • Provides Maximum Off-Road Clearance
  • Uses the Factory Hanger Locations
  • 2.50-inch Mandrel-bent Tubing
  • Dyno Tuned For Maximum HP
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Flowmaster Quality
  • Includes Hardware
  • Easy Installation


Brand Flowmaster
Catalytic Converter Included No
Emission Code 5
Exhaust Series Outlaw
Exit Position Single Rear Exit
Heat Shield Included No
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Muffler Body Length (in) 11
Muffler Color Black
Muffler Finish Painted
Muffler Inlet Diameter (in) 2.5
Muffler Inlet Location Centered
Muffler Material 409S Stainless Steel
Muffler Outlet Diameter (in) 2.5
Muffler Outlet Location Centered
Muffler Overall Length (in) 18.5
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Outlaw
Muffler Shape Round
Muffler Type Reflection
Product Type Exhaust System
Single Dual Single
Sound Level Aggressive / Moderate
System Type Cat-back
Tip Cut Angle
Tip Diameter (in) 3
Tip Edge Style Cut
Tip Finish Polished
Tip Length (in) 4.75
Tip Logo Embossed
Tip Material 304 Stainless
Tip Quantity 1
Tip Shape Round
Tubing Diameter (in) 2.5
Tubing Material 409S Stainless Steel
UPC 700042038220
California Proposition 65 Chemical Name Chromium
California Proposition 65 Required Yes
Part Number 817818