817808 The Flowmaster Outlaw® Cat-back exhaust system for the 2018-2023 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. Features: 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 About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS Brand Flowmaster 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) 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 System 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 Tubing Diameter (in) 3 Tubing Material 409S Stainless Steel UPC 700042037636 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 817808 EMISSIONS 5 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 Instructions for Part# 817808 Warranty for Part# 817808 Fits 2018-2023 Mustang GT 5.0L Coupes & Convertibles without Factory Active Performance Exhaust Valves.