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Flowmaster's new Force II systems for modern diesel trucks bolt on directly behind the DPF for 50-state emissions legality and feature mandrel bent stainless steel piping. The systems are carefully engineered on the vehicles for fitment, performance and mild sound. Some systems feature Outlaw mufflers when some sound control beyond the DPF is needed, while others eliminate the muffler entirely. All systems feature Flowmaster's lifetime limited warranty and all necessary installation hardware.
| Exhaust Series | Force II |
| Exhaust Type | Single |
| Exit Position | Single Side |
| Exit Style | Straight |
| Heat Shield Attached | No |
| Inlet Diameter | 4.000 in. |
| Inlet Inside Diameter | 4.000 in. |
| Material | Stainless Steel |
| Muffler Count | 1 |
| Muffler Part Number | Kit Only |
| Muffler Series | Outlaw |
| Outlet Diameter | 4.000 in. |
| Outlet Outside Diameter | 5.000 in. |
| Single or Dual | Single |
| Sound Level | Mild/Moderate |
| System Type | Down Pipe Back |
| Tail Pipe Diameter | 4.000 in. |
| Tip Diameter | 5.000 in. |
| Tip Length | 14.000 in. |
| Tip Quantity | 1 |
| Title | Flowmaster 817621 Axle-back - 409S - Single Side Exit - Force II - After DPF - Mild/Moderate Sound |
| Tubing Diameter | 4.000 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.
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.
