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Flowmaster Mufflers - Super 40 Series Delta Flow Mufflers

Product Information
Our Price: $97.26 - $112.77
Made in the USA
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  4.9 (4 reviews)
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Aluminized Steel 13.5" Muffler | Center Inlet & Dual Outlet
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Aluminized Steel 13.5" Muffler | Center Inlet & Offset Outlet
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Unbeatable Sound Performance
Aluminized Steel 13.5" Muffler | Center Inlet & Outlet
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Aluminized Steel 13.5" Muffler | Dual Inlet & Outlet
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Increased Horsepower & Torque
Aluminized Steel 13.5" Muffler | Offset Inlet & Center Outlet
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Aluminized Steel 13.5" Muffler | Offset Inlet & Dual Outlet
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Aluminized Steel 13.5" Muffler | Opposite Side Offset Inlet & Outlet
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Aluminized Steel 13.5" Muffler | Same Side Offset Inlet & Outlet
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T409 Stainless Steel 13.5" Muffler | Center Inlet & Dual Outlet
Our Price: $112.77
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T409 Stainless Steel 13.5" Muffler | Dual Inlet & Outlet
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T409 Stainless Steel 13.5" Muffler | Offset Inlet & Center Outlet
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flowmaster-mufflers-super-40-series-delta-flow-mufflers
T409 Stainless Steel 13.5" Muffler | Offset Inlet & Outlet
Our Price: $101.93
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  • 2.5" Inlet & Outlet | 5" x 10" Body
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flowmaster-mufflers-super-40-series-delta-flow-mufflers
T409 Stainless Steel 13.5" Muffler | Opposite Side Offset Inlet & Outlet
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  • 3" Inlet & Outlet | 5" x 10" Body
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Features

  • Deep "Flowmaster" Tone: The Super 40 muffler offers the same great tone as the Original 40 from Flowmaster. It offers a deep, powerful tone that screams performance and turns heads.
  • Tame Interior Manners: Flowmaster's Delta Flow Technology gives the Super 40 Series muffler a much lighter interior tone. The Gen II case technology vastly reduces interior drone and resonance.
  • Improved Performance: The Flowmaster Super 40 offers improved exhaust flow and performance. Unrestricted flow is great for improved horsepower and torque.
  • For Cars & Trucks: The Super 40 is ideal for high horsepower cars and trucks. A large internal chamber is specifically designed for large volumes of exhaust flow coming from large bore modified engines.
  • Black Painted Finish: The Flowmaster Super 40 is constructed of aluminized steel and finished with a black paint for a unique look and improved durability.
  • Made in the USA - Santa Rosa, CA

Description

The Super 40 mufflers feature Flowmaster's newest "Gen II Delta Flow" technology. Inspired by the Top Ten race muffler, the Super 40 offers the best of both worlds when it comes to performance and sound. It's perfect for high horsepower vehicles offering unmatched performance and horsepower gains. The Super 40 offers a aggressively deep rumble similar to the Super 44, with much less interior resonance and drone. It comes in a black painted finish with a 13.5"L x 10"W x 5" H case and an overall length of 19.5". For a muffler that screams that "Flowmaster" sound without overbearing interior noise, look no further than the Super 40 Series mufflers.

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Frequently Asked Questions

What is Flowmaster's warranty?
All Flowmaster products built of aluminized steel have a 10 year limited warranty against defective materials and workmanship. All stainless steel mufflers have a 10 year limited warranty against defective materials and workmanship.

What is "Delta Flow" technology?
Flowmaster's "Delta Flow" technology has evolved from extensive Research & Development at race-tracks around the country. This new technology provides superior scavenging while reducing resonance inside the vehicle. What you can expect is improved performance while maintaining a pleasant tone, both inside and outside the vehicle.

What materials are used to build Flowmaster mufflers?
All Flowmaster products are fully mig welded and built from 16 gauge aluminized steel for durability and value. Specific part numbers of the 40 and 50 series are also offered in 409 stainless steel, while the Hushpower II mufflers are offered in either 409 stainless steel, or 304 stainless steel.

What pipe size should I use for a street application?
In general, the following guidelines should be applied for street applications.

2" tubing up to 100 hp per pipe
 
2.25" tubing up to 160 hp per pipe
 
2.5" tubing up to 200 hp per pipe
 
3" tubing up to 300 hp per pipe 
 
What is the difference between a 40 series and a 50 series muffler?
Both mufflers have the same sound outside the vehicle, but each has varying sound levels generated inside the vehicle. The 40 series (two chamber) will resonate inside the vehicle, generally around 1800-2000 rpms and also again around 2400-2600 rpms. The 50 series (three chamber) incorporates an H-chamber that helps eliminate this interior resonance in the cab area of your vehicle.

Will I lose power going from a 40 series to a 50 series, or to a 70 series?
No. Flowmaster engineers each series of mufflers for very low restriction with the main differences being varying sound levels both inside, and outside your vehicle. This way you can customize your vehicles sound levels to your vehicles needs and sound preference.


Do I need to install an "H" pipe to my dual exhaust?
Flowmaster strongly recommends using an "H" pipe, commonly known as a "balance tube" on all "true dual" exhaust systems. An "H" pipe equalizes the pressures between both banks of the engine giving a broader and flatter torque curve throughout the rpm range. It also eliminates "back-rap" common on deceleration, and creates a deeper mellower tone both inside and outside of the vehicle.

Is an "X" pipe better than and "H" pipe?
Over the years, Flowmaster's testing of all types of crossovers, including "X pipes", has revealed no substantial benefits over a properly installed "H" pipe on street driven applications. However, in race applications with small cubic inch engines and /or restricted (small bore) carburetors, will respond well to the addition of X pipes, tri-y styled collectors and/or properly designed single exhaust systems.

Will my late model vehicle run better if I replace the single inlet muffler with a true dual exhaust system?
Flowmaster does not recommend replacing factory single inlet exhaust systems with a "true dual" system on computer controlled vehicles. The computers in most late model vehicles will not be able to compensate with the fuel needed with an almost doubling of the exhaust flow. Flowmasters dual outlet kits will give you the look of a "true dual" system, while optimizing the vehicles performance.

Do I need to run tailpipes after the mufflers?
Yes, Flowmaster highly recommends running tailpipes out from under the vehicle. This directs the exhaust fumes away from the vehicle, while minimizing the sound transmitted into the cab area of the vehicle.

What kind of performance gains can I expect when installing Flowmasters on my vehicle?
Performance gains will vary dependent upon your application. The more power the vehicle makes, the bigger the gains will be. Generally, a 5-7% gain of power is fairly typical, while 1-2 mpg can be achieved. That is if you can keep your foot out of the gas to hear that Flowmaster sound.

How can I be sure that I'm buying a Flowmaster muffler?
The Flowmaster name is embossed in every muffler case that Flowmaster builds. If it doesn't say Flowmaster on the case, it's not a real Flowmaster muffler.

Additional Features

Flowmaster Mufflers - Super 40 Series Delta Flow Mufflers Flowmaster Super 40 Series Delta Flow Mufflers : The Flowmaster Super 40 mufflers feature Flowmaster's latest exhaust technology. Generation II Delta Flow technology greatly improves exhaust flow without sacrificing interior sound dampening capabilities.
Flowmaster Mufflers - Super 40 Series Delta Flow Mufflers Unbeatable Sound Performance : The Super 40 offers a very deep and powerful tone on the exterior of the vehicle while reducing interior resonance and drone.
Flowmaster Mufflers - Super 40 Series Delta Flow Mufflers Increased Horsepower & Torque : The all new Delta Flow technology allows the Super 40 to offer unmatched horsepower and torque gains. An unrestricted exhaust flow path offers a nice tone without creating excessive backpressure.
Flowmaster Mufflers - Super 40 Series Delta Flow Mufflers Flowmaster Family of Numbers : Flowmaster offers several "series" of mufflers. Each style is specifically designed for certain applications and to achieve a desired tone level. Whether you are looking for something mellow with a nice rumble, or something with a lot of bark, Flowmaster has a muffler designed to fit your needs.

Installation

Flowmaster mufflers are designed to work with new or existing exhaust systems.  They offer slip on installation and can be welded or clamped into place.  Due to the use of heavier materials, Flowmaster recommends spot welding the joints when using clamps.  On some applications it will be necessary to cut or splice when adding Flowmaster mufflers to an existing exhaust system.

3 Year Warranty

Flowmaster is offering a 3 year limited warranty on the aluminum Super 40 Series Delta Flow Mufflers.

Product Reviews Summary

Overall
4.9 
Appearance
3.8
Price / Value
3.8
Ease of Installation
3.3
Quality
3.8
4  Customer Reviews
5 Star
4   
4 Star
0   
3 Star
0   
2 Star
0   
1 Star
0   
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Part #: FLM-953049 Posted on
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5.0
(Loganville, GA)
Sounds great on my 2006 jeep grand cherokee limited 4.7 liter
Part #: FLM-952546 Posted on
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4.5
(Bolivar, PA)
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I bought my Jeep with a flowmaster already on it. I loved the sound of my old one so here I am again with a new flowmaster. It is a nice deep aggressive tone that doesn't create too much noise in the cabin. Had to do some minor tweaking with the new tailpipe but it wasn't bad at all. Not to mention this was the fairest price I've found on this muffler. Very quick delivery and will buy again from REALTRUCK.COM. Thank you!
Part #: FLM-952548 Posted on
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5.0
(York, PA)
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Part #: FLM-952546 Posted on
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5.0
(Hampton, CT)
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real nice muffler --fast shimpent ---will do buisness again---
will refer to freinds to buy from realtruck.com
price was cheaper than other places to buy online.....
would encourage you to buy from them... thank you again
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