Flowmaster® (18-21) Mustang GT Outlaw 304SS Cat-Back Exhaust System

  • Sale
  • Regular price $1,347.95

Compatible: (5.0L)

2018 - 2021 Ford Mustang GT


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.



The Flowmaster Outlaw® Cat-back exhaust system for the 2018-2019 Ford Mustang GT 5.0L is perfect for the person looking for a very aggressive exhaust tone inside and outside the vehicle, with all of the performance benefits that you would expect from Flowmaster®. This easy to bolt-on emissions-legal system features dual 3.00-inch stainless steel mandrel-bent tubing and our exclusive Scavenger® Series X-pipe for a deep unique tone and maximum power. Other features include a pair of our race-proven Outlaw Series mufflers finished off with quad 4.00-inch carbon fiber tips for a modern look. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, this system includes all necessary parts, hardware and installation instructions. Notes: This system does not fit models with the Active Performance Exhaust option. Vehicles with the Factory Active Performance Exhaust option will use system #817800.
  • Not For Vehicles With Active Exhaust Valves
  • Very Aggressive Interior & Exterior Sound
  • Dyno-Tuned for Maximum Performance
  • Our Exclusive Scavenger Series X-Pipe
  • Quad 4.00-inch Carbon Fiber Tips
  • Full Stainless Steel Construction
  • Lifetime Limited Warranty
  • Flowmaster Quality



      Brand Flowmaster
      California Proposition 65 Chemical Name Chromium (hexavalent compounds)
      Nickel (Metallic)
      California Proposition 65 Required Yes
      Catalytic Converter Included No
      Emission Code 5
      Exhaust Series Outlaw
      Exit Position DOR
      Heat Shield No
      Mount Type Uses Factory Hangers
      Muffler Body Length (in) 6.5
      Muffler Color Black
      Muffler Finish Painted
      Muffler Inlet Diameter (in) 3
      Muffler Inlet Location Centered
      Muffler Material 409S Stainless Steel
      Muffler Outlet Diameter (in) 3
      Muffler Outlet Location Centered
      Muffler Overall Length (in) 49.5
      Muffler Part Number Kit Only
      Muffler Quantity 2
      Muffler Series Outlaw
      Muffler Shape Round
      Muffler Type Reflection
      Product Type Exhaust Systems / Kits
      Single Dual Dual
      Sound Level Aggressive
      System Type Cat-back
      Tip Cut Angle
      Tip Diameter (in) 4
      Tip Edge Style Rolled
      Tip Finish Natural
      Tip Length (in) 5.25
      Tip Logo Printed
      Tip Material 304 Stainless/Carbon Fiber
      Tip Quantity 4
      Tip Shape Round
      Tip Style Double Wall
      Tubing Diameter (in) 3
      Tubing Material 409S Stainless Steel
      Part Number 817808




      Install Guide: