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Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.
| Download Name | File Size |
| fm_warranty_general.pdf | 88.58KB |
| FM_Warranty_General.pdf | 88.58KB |
| NAFTA_COO-2013.pdf | 105.94KB |
| 817825_instructions.pdf | 681.78KB |
| Make | Model | Submodel | Years | Engine | Fitment Notes |
| Ford | Mustang | GT Premium | 2018 | 5.0L / 302 / V8 | Dual; Dual Rear Exit; Incl. 3 in. Tubing/Outlaw(TM) Mufflers/4.0 in. Quad Black Ceramic Coated Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant Fits vehicles with Factory Active Exhaust Valves |
| Ford | Mustang | GT Premium | 2019 | 5.0L / 302 / V8 | Dual; Dual Rear Exit; Incl. 3 in. Tubing/Outlaw(TM) Mufflers/4.0 in. Quad Black Ceramic Coated Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant Fits vehicles with Factory Active Exhaust Valves |
| Ford | Mustang | GT | 2018 | 5.0L / 302 / V8 | Dual; Dual Rear Exit; Incl. 3 in. Tubing/Outlaw(TM) Mufflers/4.0 in. Quad Black Ceramic Coated Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant Fits vehicles with Factory Active Exhaust Valves |
| Ford | Mustang | GT | 2019 | 5.0L / 302 / V8 | Dual; Dual Rear Exit; Incl. 3 in. Tubing/Outlaw(TM) Mufflers/4.0 in. Quad Black Ceramic Coated Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant Fits vehicles with Factory Active Exhaust Valves |
| California Proposition 65 Chemical Name | Chromium (hexavalent compounds) |
| California Proposition 65 Chemical Name 1 | Lead |
| California Proposition 65 Chemical Name 2 | Chromium |
| California Proposition 65 Required | Yes |
| Catalytic Converter Included | No |
| Emission Code | 5 |
| Exhaust Series | Outlaw |
| Exhaust Type | Axle-Back |
| Exit Position | Dual Rear |
| Heat Shield | No |
| Inlet Inside Diameter | 3.000 in. |
| Material | 409S Stainless Steel |
| Mount Type | Uses Factory Hangers |
| Muffler Body Length (in) | 5.5 |
| 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 |
| Part Type | Exhaust System Kit |
| Single Dual | Dual |
| Sound Level | Aggressive |
| System Type | Axle-back |
| Tail Pipe Diameter | 3.000 in. |
| Tip Cut | Angle |
| Tip Diameter | 4.000 in. |
| Tip Diameter (in) | 4 |
| Tip Edge Style | Cut |
| Tip Finish | Black Ceramic |
| Tip Length (in) | 5.25 |
| Tip Logo | Embossed |
| Tip Material | 304 Stainless |
| Tip Quantity | 4 |
| Tip Shape | Round |
| Tubing Diameter | 3.000 in. |
| Tubing Diameter (in) | 3 |
| Tubing Material | 409S Stainless Steel |
| WARNING CA Proposition 65 | WARNING: Cancer and Reproductive Harm |
