Flowmaster Flow FX Cat-Back Exhaust SystemThis Flowmaster Flow FX cat back exhaust system for the 2017 2025 Ford F250 F350 Super Duty trucks with the 6. 2, 6. 8 or 7. 3 liter engine is manufactured using durable 409 stainless steel throughout and features 3. 5 to dual 3. 0 inch mandrel bent pipes for better exhaust gas flow. A Flow FX "straight through" muffler is used for an aggressive to moderate sound level and maximum performance. Maximum increases on the dyno revealed +11 hp and +15 lb
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