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Flowmaster's American Thunder cat-back exhaust system for the 2013-2018 Ford Focus ST hatchback is perfect for the person looking for moderate to aggressive sound levels with all of the performance benefits that you would expect from Flowmaster. This bolt on DOR (Dual Out Rear) emissions legal system for the 2.0L L4 turbocharged engine features a specially tuned muffler and resonator, 2.25 inch mandrel bent stainless steel tubing, and 3.25 x 3.75 inch oval polished stainless steel tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
|Exit Position||Dual Rear|
|Heat Shield Attached||No|
|Inlet Diameter||2.250 in.|
|Inlet Inside Diameter||2.250 in.|
|Muffler Part Number||Kit Only|
|Muffler Series||Tuned Resonator|
|Outlet Diameter||2.500 in.|
|Outlet Outside Diameter||2.250 in.|
|Single or Dual||Single|
|System Type||Cat Back|
|Tail Pipe Diameter||2.250 in.|
|Tip Diameter||3.250 in. x 3.750 in.|
|Tip Length||7.000 in.|
|Title||Flowmaster 817637 Cat-back - Dual Rear Exit - American Thunder - Mod/Agg Sound|
|Tubing Diameter||2.250 in.|
*Some manufacturer restrictions apply.
Manufacturer of performance exhaust systems, mufflers, cold 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.
Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.
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