If you own a muscle car, truck, or performance vehicle, you know that the stock exhaust just doesn’t cut it. You want an aggressive, powerful sound that will turn heads when you drive by. You want to feel the rumble of raw power that only comes with a performance exhaust upgrade. That’s where the Flowmaster Force II comes in. This exhaust system gives you the deep, throaty sound you crave along with noticeable horsepower and torque gains.
What Vehicles are Compatible with the Flowmaster Force II?

The great thing about the Flowmaster Force II is that it’s compatible with most V8 applications from high-performance street cars to pickup trucks. If you drive a Mustang, Camaro, Corvette, Challenger, Charger, truck with a V8 – even classic muscle cars from the 60s and 70s – chances are there’s a Flowmaster Force II kit made to fit your ride. They’ve engineered it for a direct bolt-in replacement of your stock system, making installation straightforward.
Specifically, Flowmaster offers Force II kits for popular models like:
- Ford Mustang GT & Shelby GT500
- Chevy Camaro SS and ZL1
- Dodge Challenger and Charger SRT Hellcat
- Dodge Ram 1500, 2500, and 3500 trucks
- Jeep Wrangler
- Toyota Tundra and Tacoma trucks
- Chevy Silverado and GMC Sierra 1500 and HD trucks
- Nissan Titan and Frontier
And they didn’t forget the classics. You can get Force II kits for iconic muscle cars like:
- 1964-1972 Chevelle/GTO/Cutlass
- 1967-1981 Camaro/Firebird
- 1964-1973 Mustang/Cougar
- 1967-1976 Nova
- 1978-1987 Regal/Grand National
- 1996-2010 Mustang GT
So whether you’re driving a modern performance truck, a classic hot rod Chevelle, or anything in between – there’s a Flowmaster Force II exhaust ready to liven up your ride.
How the Flowmaster Force II Improves Performance

Here’s the best part about the Flowmaster Force II system – it doesn’t just sound good, it actually increases your vehicle’s horsepower, acceleration, and throttle response.
Flowmaster spent extensive time researching and developing the Force II to improve power output. The secret lies in its mandrel-bent tubing and specially engineered mufflers. This reduces backpressure compared to a restrictive stock exhaust. The smooth mandrel bends maximize exhaust flow, allowing spent gasses to exit more efficiently. The Flowmaster mufflers are specifically tuned for your particular make and model to find the optimal balance of reduced backpressure and that iconic Flowmaster sound.
The result is noticeable gains in torque and horsepower throughout the RPM range. Expect up to 10-15 HP increase on average. Your acceleration will improve, especially in the low to mid RPMs where it counts on the street. Just as important, the throttle response becomes much more crisp, with reduced “lag” when you mash the gas. The engine just feels more free-revving and responsive, bringing back that performance feeling you expect.
Whether you’re towing and hauling with a truck, street racing on the weekend, or just want a more responsive daily driver, those Flowmaster-tuned mufflers and mandrel bent pipes deliver on both sound and power.
Aggressive Sound – But Not Too Loud

Now on to what you really want – that deep muscular exhaust tone that only comes from a Flowmaster. The Force II is designed to give you an aggressive sound, but it’s not obnoxiously loud.
Flowmaster knows the goal is turning heads, not breaking eardrums. The Force II gives you that deep, throaty rumble at idle and screams when you get on it. You’ll hear some interior resonance, but not enough to be annoying on long drives. There are no obnoxious resonators or giant fart cans here.
The mandrel bent piping keeps the tone smooth, while the Flowmaster mufflers ensure plenty of attitude when you step on the gas. It’s the perfect balance of menacing muscle and everyday livability.
Choose Your Sound – From Mild to Wild

One great feature of the Flowmaster line is you can choose from different muffler options to get your perfect exhaust note. From mild and conservative to wild and in-your-face, they’ve got you covered.
The standard Force II kit comes with their 50 series Delta Flow mufflers for an outstanding combination of tone, power gains, and moderate interior resonance. It’s the perfect choice for most drivers looking to liven up their V8’s sound with requiring maximum attitude.
But let’s say you want to turn the aggression dial up even further. Then you’ll want the Force II kit upgraded with Flowmaster’s Super 40 series muffler. This uses a more unrestrictive design that allows for maximum exhaust flow. It delivers on the interior resonance for that true race car feel. The Super 40 has an intense, racing-inspired sound that will turn heads from blocks away.
On the other side of the spectrum, the Flowmaster Super 10 series muffler delivers their most mild, conservative tone. There’s still plenty of Flowmaster attitude, but with reduced resonance for a more livable everyday experience. It allows you enjoy the power gains and exhaust note without causing excessive drone inside the cabin.
So whether you prefer the sinister rumble of the Super 40 or the refined muscle of the Super 10, Flowmaster offers options to get the perfect exhaust note for your tastes and driving needs.
Professional Installation Recommended

While advanced DIYers may be tempted to tackle installation themselves to save money, I highly recommend leaving it to professional exhaust shop.
Proper exhaust installation requires cutting the existing system, fabricating custom hangers and brackets, and careful alignment of the new system. Clamp connections must be perfectly mated and leak-free to avoid dangerous exhaust gases entering the cabin.
Unless you have professional-grade tools and fabrication experience, mistakes in the DIY process can lead to leaks, misaligned components, and reduced performance gains. Your local exhaust shop has the know-how and equipment to ensure a quick, headache-free installation.
An experienced shop can usually install a complete cat-back Flowmaster Force II system in 2-3 hours, compared to a full weekend or longer for a DIY novice. The cost savings of doing it yourself will quickly evaporate if you end up with leaks or other issues requiring fixes down the road. Get it done right the first time and enjoy that hassle-free Flowmaster rumble.
Built from High Quality Mandrel-Bent Steel
Flowmaster uses only the highest grade mandrel-bent 16 gauge stainless steel in their Force II exhaust tubing. This allows for smooth exhaust flow and maximum performance gains compared to stock crush-bent piping.
Mandrel bending keeps the pipe completely round through the bending process, maintaining optimal flow geometry. Crush bending pinches the pipe out of round as it’s formed, restricting exhaust flow and hindering performance. Mandrel bending costs substantially more than crush bending, but Flowmaster chose to go this more expensive route to deliver the best performing exhaust systems.
The entire cat-back system, from the headpipes back to the tailpipes, are constructed from this premium 16 gauge stainless steel. This material maintains its corrosion resistance properties far better than ordinary mild steel. You’ll get long-lasting performance and appearance from the Flowmaster Force II system.
Combine the mandrel bent tubing with their precision-engineered mufflers, and you’ve got the recipe for increased power along with that signature Flowmaster sound.
Achieving the Perfect Balance of Sound and Performance

When engineering their Force II exhausts, Flowmaster’s goal was achieving the perfect crossroads of sound, power gains, interior resonance, and value. It took extensive research, testing, and refinement on the dyno and street to accomplish this.
They could’ve easily made a system that was obnoxiously loud or added huge gains on the dyno alone. But real-world performance and livability were just as important. The dyno numbers don’t mean much if there’s excessive drone and resonance issues that make it unbearable to drive daily.
After extensive experimentation and tweaking, Flowmaster found the ideal combo with the Force II series. This battle-tested formula has made it their best-selling exhaust line and top choice for muscle car and truck owners wanting to liven up their ride.
Prices That Won’t Break the Bank
Here’s a pleasant surprise when shopping for a cat-back performance exhaust system – the Flowmaster Force II is very reasonably priced. Considering the use of premium materials, quality construction, engineering, and performance gains delivered, it provides outstanding bang-for-the-buck.
Full Force II cat-back systems start around $500 for most muscle cars and trucks. Compare this to the $1000+ some competitor’s systems cost and you’ll see why Flowmaster dominates the exhaust aftermarket. You simply won’t find another system providing this level of sound and performance at this price point.
And if you just want to upgrade your existing factory H-pipe/X-pipe and mufflers, Flowmaster also offers Force II muffler-only kits starting around $250. Just swap these in place of your stock mufflers for most of the same sound and power benefits at half the cost. This is the budget-friendly way to wake up your ride’s exhaust note without breaking the bank.
So don’t let the cost keep you from realizing your V8’s full potential. With Flowmaster’s value pricing, you can get professional grade sound and performance gains for less than you probably expect.
Lifetime Limited Warranty for Peace of Mind
To back their quality and workmanship, Flowmaster provides a lifetime limited warranty on materials and defects for their Force II exhausts. This protects you from the unlikely event of a defective component or premature corrosion.
The warranty stays with the vehicle, even if you sell it. So both the original purchaser and any subsequent owners are covered for the full lifetime of the product.
Few other companies stand so strongly behind their exhaust systems like this. Flowmaster clearly has full confidence in the Force II’s durability and longevity. The warranty shows they engineer and build their exhausts to last, not just for short term thrills.
Improved Fuel Efficiency – More MPGs

You might think that just making an exhaust louder forfeits any chance of improving fuel economy. Incredibly, the Flowmaster Force II system can actually increase your mileage per gallon (MPG) thanks to its performance enhancing design.
By reducing backpressure and restriction in the exhaust system, engine efficiency improves. Combustion gasses can more easily exit through the low-restriction tubing and mufflers. This reduces pumping losses inside the engine, freeing up horsepower normally wasted fighting exhaust backpressure.
With the engine working less to expel gasses, more power gets directed to the drive wheels instead of being lost out the tailpipe. The ECU can then lower fuel input requirements with greater efficiency. Plus quicker throttle response from the free-flowing exhaust makes it easier to accelerate lightly when needed, another key to maximizing MPGs.
While the fuel economy gains are modest for most drivers, you may see MPG improvements of 1-2 MPGs on average. For heavy-footed, leadfoot drivers, gains can jump to 3 MPG or more since the restrictive stock system hampers economy driving. Either way, you get increased performance AND improved fuel efficiency – a win-win combination.
Wake Up Your Ride’s Sound and Power with the Flowmaster Force II
If you’re like most performance enthusiasts, you want to fully unlock your ride’s potential both visually and audibly. The Flowmaster Force II exhaust system achieves this goal for muscle car, truck, and other V8 drivers seeking more power and attitude.
You’ll turn heads from blocks away with its deep, commanding Flowmaster tone that declares your vehicle means business. There’s simply no substitute for the throaty rumble and roar of a Flowmaster exhaust system.
And you’ll feel the addicting surge of immediate throttle response and torque handed out by the free-breathing, mandrel bent piping. Whether cruising downtown or racing on the track, your vehicle maintains crisp performance.
The Flowmaster Force II kit checks all the must-have boxes:
- Increased power and acceleration
- Improved throttle response
- Signature Flowmaster sound
- Choice of muffler sound levels
- Professional grade construction
- Reasonable prices
- Easy bolt-in installation
So why wait to unleash the true spirit and attitude of your Mustang, Challenger, Camaro, truck, or other V8? The Flowmaster Force II will have heads turning every time you roll up. Install this icon of muscle car exhausts and feel your V8 finally come to life. The Flowmaster Force II – setting the performance exhaust standard for over 30 years!