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Ninosport is your ultimate destination when purchasing Mustang exhaust parts. We have the best selection of exhaust parts for your late-model Mustang GT, V6, or Shelby. We've got Mustang axle-backs, cat-backs, headers, mufflers, metal matrix catalytic converters, and all styles of mid-pipes from your favorite brands like BBK, Borla, Bassani, Flowmaster, Magnaflow, SLP, and many more. Ninosport really is your number one dealer for all things exhaust on your Mustang!
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Mustang Exhaust FAQs
What are the benefits of upgrading the stock Mustang exhaust system with performance components?
The main benefit is an overall improvement in exhaust flow which results in increased mileage, power, and torque. Additional benefits include improvements in exhaust sound and component appearance.
What are the main components of the Mustang exhaust system?
  • Headers: Bolted onto each of the engine's cylinder heads are the headers. Each header combines the exhaust gases from the cylinder head's individual exhaust ports into a single outlet.
  • Mid-pipe: Connected to the headers is the exhaust mid-pipe. The mid-pipe normally has catalytic converters and oxygen sensors attached to it, which are part of the car's emissions and engine management systems. The mid-pipe also has an H- or X-shaped crossover section that equilizes the exhaust flow and splits the exhaust into dual outlet pipes.
  • Cat-back: The cat-back section bolts onto the mid-pipe and includes the mufflers, the exhaust tips, and the necessary tubing required to route the exhaust gases out the rear of the car. Note that 1994-10 V6 Mustangs came stock with a Y-shaped mid-pipe and single exit cat-back.
  • Axle-back: On 2005 and later Mustangs, Ford divided the cat-back into over-the-axle pipes and the axle-back section. The axle-back consists of the mufflers and exhaust tips only and connect to the stock over-the-axle pipes.
What are the differences between an axle-back and a cat-back on 2005 and later Mustangs?
On 2005 and later Mustangs, Ford divided the cat-back into two parts: the over-the-axle pipes and the axle-back section. As the name implies, the axle-back is located behind the rear axle and consists of the mufflers and exhaust tips. That means that when you purchase a cat-back, you are essentially getting an axle-back kit plus the over-the-axle pipes.
What are the differences between a Mustang H-pipe and X-pipe?
Powerwise, H-pipes boost low end torque while X-pipes produce more torque and power in the top end of the rev range. In terms of sound, the X-pipe produces a smoother note compared to an H-pipe due to the fact that it more evenly equilizes the exhaust pulses. Most V8 Mustangs come from the factory with an H-pipe, so its rumbly sound should be familiar to most Mustang owners.
What are the differences between Mustang shorty and longtube headers?
Shorty headers are direct replacements of the stock exhaust manifolds so they are designed be used with a stock-style mid-pipe. While shorty headers typically provide modest horsepower gains, they are relatively inexpensive and a growing number of them are 50-state emissions legal which is a major plus for many Mustang owners. Longtube headers, on the other hand, must be used with a short mid-pipe specifically designed for those headers, making them much more expensive than shorty headers. Longtubes offer major power gains but they are not emissions legal since the the stock converters must be removed.
What exhaust components will give my Mustang the most power?
When it comes to headers, longtubes will significantly outperform shorty headers. When comparing mid-pipes, X-pipes will make more peak power than an H-pipe, but H-pipes have been shown to make more low end torque than X-pipes. Cat-back and axle-back systems will show minimal horsepower differences from brand to brand, so our advice is to choose a system that sounds good to you. Choosing the right size components is also important, and in this respect, bigger is not always better. If your Mustang will make less than 500 horsepower after modifications, your headers should have primaries no larger than 1-5/8" and the mid-pipe and cat-back should have 2.5" diameter tubing for best results. For Mustangs making above 500 hp, headers can have primaries measuring 1-3/4" or 1-7/8", while the mid-pipe and cat-back will benefit from 3" diameter tubing. In all cases, metal matrix catalytic converters will outperform high-flow ceramic converters, and will perform nearly as well as having no converters at all.
What exhaust components will give my Mustang the sound I want?
Of all the exhaust parts on your Mustang, the mufflers have the biggest effect on sound. If you're mostly interested in improving the sound, you should change out the stock mufflers by installing an axle-back or cat-back system, or simply welding in new mufflers. We've provided sound clips of some of the axle-backs and cat-backs so you can determine if the sound is right for you.
What are the different materials used on Mustang exhaust components?
  • 304 Stainless Steel: High chromium content stainless steel. This is a top grade material used to make exhaust components. Because of its high chromium content, it can be polished to a mirror finish and has superior anti-corrosive properties. This material has natural heat insulation properties so even in uncoated form, it makes an excellent material for headers.
  • 409 Stainless Steel: Titanium stabilized ferritic stainless steel. This is a mid-grade material used to make exhaust components. In fact, the factory stock exhaust system is made of 409 stainless steel. While 409 makes a good material for exhaust components, with time it can develop a layer of surface rust, but it will never rust through.
  • Aluminized Steel: Carbon steel with an aluminum chemical coating applied to inhibit rust. This is the most economical material used for exhaust components. Under normal conditions aluminized steel will hold up well, but surface scrapes can remove the aluminized coating and allow rust to develop on the base carbon steel. Aluminized steel does not hold up well in places with corrosive elements in the environment, such as road salt.
What is a mandrel bend and what are its benefits?
Low cost exhaust pipe benders crush the pipe at the bend, creating a choke point for the exhaust flow. Mandrel pipe benders have special features that maintain a constant diameter throughout the bend, thus maximizing exhaust flow. All major exhaust manufacturers use mandrel bent tubing on their exhaust systems because of its superior performance. Most local muffler shops do not have mandrel benders because they are very expensive machines.
What are the different surface finishes used on Mustang headers?
  • Ceramic Coating: This type of coating acts as a thermal barrier and keeps the heat of the exhaust inside the headers. This greatly aids performance by keeping exhaust velocities high and underhood temperatures low. Ceramic coatings normally have a silver metallic color, but are available in a variety of colors. Ceramic finishes have the benefit of keeping their original finish year after year.
  • Chrome Plating: Chrome plating is used to improve the appearance of headers, but with time it will turn a bluish color due to the intense heat that headers are subjected to. Chrome plating does not have any insulating properties like a ceramic coating.
  • High Temperature Paint: Specially formulated paint that can withstand high temperatures and is used to improve the appearance of headers. This paint does not function as a thermal barrier like ceramic finishes and with time can wear off like any other paint.
  • Bare Stainless Steel: This material has natural heat insulation properties so even in its uncoated state, it makes an excellent material for headers.
Are Mustang exhaust parts emissions legal?
  • Axle-backs, Cat-backs & Mufflers: These components do not affect the factory catalytic converters or any other emissions related part so they are all 50-state emissions legal. Please note that some exhaust parts are very loud and therefor not noise legal, but this is different from being emissions legal.
  • Mid-pipes: Only mid-pipes that connect to the stock converters are 50-state emissions legal. Mid-pipes that connect to stock and longtube headers remove the factory catalytic converters, so they are not 50-state emissions legal and are not for use on public roads.
  • Headers: A growing number of shorty headers are receiving 50-state emissions certification, but not all of them are so please check with the manufacturer for the most up to date information. Longtube headers and their matching short mid-pipes, by the nature of their design, remove the stock converters so they are not emissions legal.