Do aftermarket motorcycle exhaust increase horsepower- Are they worth it?

Do after market exhaust increase horsepower in motorcycle
Do after market exhaust increase horsepower in motorcycle

Aftermarket exhaust has played a crucial role in intensifying the style and sound of the motorcycle. As they come in a variety of materials and types, it helps in enhancing the overall looks of a motorbike, and shred a considerable amount of weight. But a common question that most of the riders have, does aftermarket motorcycle exhaust increase horsepower.

Do aftermarket motorcycle exhaust increase horsepower? Aftermarket exhaust increases the horsepower and torque of the motorcycle by minimizing the backpressure and improving the air intake of the engine, all this leads to the increase in the intensity and counts of combustion taking place in the engine.

Other than this aftermarket exhaust also shreds nearly 15 to 20 pounds of weight from the motorcycle by eliminating components like catalyst converter and using feather-light materials like carbon fiber and titanium thus improving overall performance and handleability. 

So for now we do know that an aftermarket exhaust improves the horsepower of the motorcycle. But how much? Keep reading further as we will help you to find out that what amount of horsepower will you gain after switching to an aftermarket exhaust.     

How much horsepower does aftermarket exhaust add to a motorcycle?

An aftermarket exhaust increases the horsepower of the motorcycle by 12 % to 15 %. However, the gain in horsepower totally depends upon the tuning and re-mapping of the ECU to create the perfect equilibrium of the air-fuel mixture inside the engine.

This is a very significant amount of horsepower you can get out of a motorcycle without making any major alteration. But there is a catch in it. In order to get more horsepower after installing the aftermarket exhaust in your motorcycle, you need to remap the ECU of your motorbike in order to get the right equilibrium of the air and fuel mixture inside the motorcycle engine. 

And this step is really important, and you will not want to mess it up. As incorrect consistency in the air-fuel mixture can make the engine too lean which can result in an increase in temperature of the engine, poor throttle response, and bad performance.

But a correctly tuned fuel controller can also increase the horsepower by up to 18%, depending upon the quality of the aftermarket exhaust. In order to get some general numbers of how much horsepower is added on after switching to an aftermarket exhaust.

I got in touch with some of the motorbike enthusiasts and asked them regarding the change in performance after they switch to an aftermarket exhaust.  Their response concludes with an average increment of nearly 50 horsepower after installing a full system exhaust in their motorcycle. 

But it also leads us to another interesting fact. That such a significant increase in horsepower is only possible with full system exhaust. So does a slip-on exhaust is of no use, if one needs to improve the horsepower of their motorcycle.  Keep going, as I have mentioned further in this post.

Does slip-on exhaust add horsepower to a motorcycle?

Does Slip-on exhaust add horsepower to a motorcycle?
Does Slip-on exhaust add horsepower to a motorcycle?

A slip-on exhaust can increase the horsepower of the motorcycle by adding nearly 3% to 5% of the total horsepower, to the engine. As the slip-on exhausts are mainly used to improve the sound quality, they do not make a significant difference in horsepower or overall performance. 

Slip-on exhausts are generally cheaper as compare to full system exhaust. As they are mainly used to replace the muffler of the stocked exhaust to improve the esthetic and sound quality of the motorcycle. 

As the slip-on exhausts only consist of mufflers there is no significant reduction in terms of weight. 

Other than this as slip-on exhaust does not come with header or mid-pipes they are not helpful in increasing the horsepower and torque of the motorcycle.

They are mainly designed for sound and style and they do not play any crucial role in increasing the horsepower or performance of the motorcycle. So if you want to make an overall improvement in terms of performance, style, and sound then you must choose a full system exhaust.

And if you are happy with your motorcycle performance and only want the rumbling sound then you must go for a slip-on exhaust. As they are much cheaper and easy to install as compared to full system exhaust.

As of now, we know that what we will gain in terms of horsepower while choosing one of the exhaust types we must also look into the pros and cones of aftermarket exhaust. 

Pros & cons of aftermarket motorcycle exhaust

Pros and cons of aftermarket motorcycle exhaust
Pros and cons of aftermarket motorcycle exhaust

While aftermarket comes with its own benefits there is also some drawback that you should consider while getting one of them for your motorcycle. Here I have listed down some of the pros & cons that you can expect from the aftermarket motorcycle exhaust. 

Pros of Getting an aftermarket motorcycle exhaust.

  1. Aftermarket exhausts(full system) are made of very lightweight material as compare to stock exhausts. Thus they shred a lot of weight from the motorcycle and improves the handleability.  
  2. Aftermarket exhausts are available in lots of styles like low mount, high mount. Equipped with different types of finishes like glossy, matte, and carbon fiber.
  1. Aftermarket exhausts(full system) are made of very lightweight material as compare to stock exhausts. Thus they shred a lot of weight from the motorcycle and improves the handleability.  
  2. Aftermarket exhausts are available in lots of styles like low mount, high mount. Equipped with different types of finishes like glossy, matte, and carbon fiber.

Cons of getting an aftermarket motorcycle exhaust

  1. One of the major cons of aftermarket exhaust is that they are not street legal in many places. So, while getting an aftermarket exhaust you must know the rules and regulations for its usage.
  2. A full system exhausts are very expensive, and to get a noticeable change in the performance, you need to go with a full system exhaust rather than getting a cheaper slip-on exhaust.
  3.  You need to do an ECU remap after the installation of an aftermarket full system exhaust. Passing over it can hurt your motorcycle by causing overheating of the engine.
  4. A Full system aftermarket exhaust can only work on a motorcycle using a fuel injector.
  5. As many aftermarket exhausts don’t contain catalytic convertors they cause a lot of air and noise pollution. 

These are some of the pros & cons you will get from after-market exhaust. While there are a lot of companies dealing in motorcycle exhaust you can eliminate some of the cons by choosing one that is the best fit for you.

Conclusion

If you are choosing the right kind of aftermarket motorcycle exhaust, then it can be very helpful in increasing the overall performance of your motorcycle. While selecting the motorcycle exhaust keep your requirements in mind, so you do not spend a lot or do not end up getting the wrong one.

Related Question

Can aftermarket exhaust damage the engine of the motorcycle?

An aftermarket exhaust does not harm your engine if itis manufactured by a genuine brand. However, if you have not done ECU remap after the installation of aftermarket motorcycle exhaust then it can result in engine overheating and poor throttle response.

Are aftermarket motorcycle exhausts illegal?

Aftermarket motorcycle exhausts are considered illegal in many countries. As an aftermarket motorcycle exhaust eliminates legality by removing catalytic converters, thus causing a lot of air and noise pollution hence making them non-compliant with the laws.

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