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Flowmaster's American Thunder Axle-back exhaust system for the 2015-2017 Ford Mustang GT is perfect for the person looking for an aggressive sound level both inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out Rear) emissions-legal system for cars with the 5.0L engine features a pair of Super 44 Series mufflers and dual mandrel bent 3.00in tailpipes for maximum performance. The system is built out of 409S stainless steel and utilizes 4.00in 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. Note: This system fits hardtops and convertibles.
| Catalytic Converter Included | No |
| Color | Black |
| Exhaust Type | Dual |
| Exit Position | Dual Rear |
| Exit Style | Straight |
| Heat Shield Attached | No |
| Inlet Diameter | 2.500 in. |
| Inlet Inside Diameter | 3.000 in. |
| Material | Stainless Steel |
| Mount Type | Flanged |
| Muffler Count | 2 |
| Muffler Part Number | Kit Only |
| Muffler Series | Super 44 |
| Muffler Type | Welded Baffle |
| Outlet Diameter | 3.000 in. |
| Outlet Outside Diameter | 3.000 in. |
| Shape | Oval |
| Single or Dual | Dual |
| Sound Level | Moderate/Aggressive |
| Tip Cut | Angle |
| Tip Diameter | 4.000 in. |
| Tip Finish | Polished |
| Tip Logo | Embossed |
| Tip Material | Stainless Steel |
| Tip Quantity | 2 |
| Tip Shape | Round |
| Tip Type | Double Wall |
| Title | Flowmaster 817749 Axle-back System - 409S - Dual Rear Exit - American Thunder - Mod/Agg Sound |
| Tubing Diameter | 3.000 in. |
| Tubing Material | Stainless Steel |
*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.
An upgraded exhaust system is one of the easiest modifications that offers an immediate, noticeable performance improvement. Whether you’re cruising an M3 or modding a diesel truck, an upgraded exhaust will open up the restrictive factory system, allowing your engine to breathe better and deliver peak power! From lighter weight exhaust headers to improved cat-back systems, to better sounding mufflers, modifying your exhaust setup is a great place to express the character of your ride in a unique and cost effective way. Whatever you’re looking for in a modified exhaust system, we can provide the absolute best systems to make your vision a reality.
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.
The best modders use Wheelwell to build their dream rides.
