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2018-2020 Ford Mustang GT Cat-back Exhaust System Flowmaster Outlaw 817800

2018-2020 Ford Mustang GT Cat-back Exhaust System Flowmaster Outlaw 817800

SKU: 817800
Regular price $1,925.95 USD
Regular price Sale price $1,925.95 USD
Sale Sold out

The Flowmaster Outlaw® Cat-back exhaust system is designed for 2018-2020 Ford Mustang GT 5.0L with the Factory Performance Active Exhaust option, and is perfect for the person looking for a very aggressive exhaust note both inside and outside the vehicle. This easy to bolt-on emissions-legal system features large dual 3.00-inch mandrel-bent stainless steel tubing with our exclusive Scavenger Series® X-pipe flowing into a pair of our race-proven Outlaw Series mufflers for a deep aggressive sound and maximum power. The exhaust system uses the factory hanger locations for an easy installation and the mufflers include our high quality exhaust valves and actuator stands to retain your factory actuator motors that control the active exhaust. The system finishes off with quad 4.00-inch black ceramic coated 304 stainless steel tips giving your Pony the look and sound it deserves. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. The system includes all necessary parts, hardware and easy to follow instructions. Covered by our Lifetime Limited Warranty. Notes: Fits Coupes and Convertibles with Factory Active Exhaust.


  • Quad 4.00-inch Black Ceramic Coated Stainless Tips
  • Mandrel-bent 3.00-inch Stainless Steel Tubing
  • Includes Exclusive Scavenger Series X-pipe
  • Very Aggressive Interior/Exterior Sound
  • Dyno-Tuned for Maximum Performance
  • Uses the Factory Hanger Locations
  • 409S Stainless Steel Construction
  • Lifetime Limited Warranty
  • Flowmaster Quality


  • Fits 2018-2020 Mustang GT 5.0L Coupes & Convertibles with Factory Active Performance Exhaust Valves.
Brand Flowmaster
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Chemical Name Lead
California Proposition 65 Required Yes
Catalytic Converter Included No
Emission Code 5
Exhaust Series Outlaw
Exit Position Dual Out Rear
Heat Shield 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) 3
Muffler Inlet Location Side
Muffler Material 409S Stainless Steel
Muffler Outlet Diameter (in) 3
Muffler Outlet Location Dual
Muffler Overall Length (in) 49.5
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series 60 Series
Muffler Shape Oval
Muffler Type Reflection
Product Type Exhaust System
Single Dual Dual
Sound Level Aggressive
System Type Cat-back
Tip Cut Angle
Tip Diameter (in) 4
Tip Edge Style Rolled
Tip Finish Black Ceramic
Tip Length (in) 5.25
Tip Logo Embossed
Tip Material 304 Stainless
Tip Quantity 4
Tip Shape Round
Tubing Diameter (in) 3
Tubing Material 409S Stainless Steel
Warning California Proposition 65
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Return Policy

We offer 30 days return of 100% purchase price for defective items. Return shipping and handling charges are the customers responsibility unless it is our mistake. (If shipping was included it will be deducted from the return)  If the part is wrong or defective please advise us if you would like an exchange, replacement or refund. We suggest our buyers keep tracking number delivery confirmation, and pack item securely to protect the return. If the part is lost we are unable to offer a refund. The part(s) must be returned in its original condition. Returns over 30 days may be accepted at a discounted price & offered store credit. Our return address is 774 Broad St Wadsworth, Oh 44281.


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