Your Guide to Buying Aftermarket Bike Exhaust Parts

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Your Guide to Buying Aftermarket Bike Exhaust Parts

A motorcycle's exhaust system may not get much glory when it comes to a bike's performance, but it is critical to determining how powerfully the engine runs. The exhaust system is responsible for removing dirty fumes the engine produces, making way for intake of clean air for combustion.

One way to improve engine performance is to buy aftermarket bike exhaust parts.. These parts often represent an upgrade over the stock parts that come with motorcycles. In order to buy the right parts, consumers should have a solid understanding of exhaust systems and aftermarket bike exhaust parts. They should also know what prominent aftermarket parts do within an exhaust system. Consumers can find aftermarket bike exhaust parts from traditional sources such as auto body shops and from online sources such as eBay.. By learning about these parts, consumers should be able to shop successfully for them and get the performance from their bikes that they expect.

Understand Aftermarket Bike Exhaust Parts

Buying the right aftermarket bike exhaust parts is a delicate process. Consumers must find ways to ensure that the parts deliver the performance they expect and that the parts keep the bikes in line with British emissions regulations. Those looking to buy aftermarket bike exhaust parts should therefore understand the role of the exhaust system, the benefits of aftermarket parts, and how to find compatible parts. It is also important to learn about British emissions regulations.

Role of the Exhaust System

A motorcycle exhaust system serves two purposes: it directs noxious gases that the engine produces away from the motorcycle rider, and it clears dirty air from the engine so that it can take in fresh air. A motorcycle engine generates the power it needs to propel a motorcycle by combining air and fuel inside the cylinders to produce internal combustion. This combustion creates the energy the engine needs to rapidly turn the motorcycle's wheels. It also produces fumes as a byproduct. Since these fumes are unhealthy to breathe, the motorcycle needs an exhaust system to keep the fumes clear of the rider. Mixing this dirty air with fuel also produces less powerful combustion than mixing the fuel with clean air does. Therefore, the engine needs an exhaust system to remove dirty air from one combustion cycle in order to intake fresh air for a new cycle.

Benefits of Aftermarket Parts

Aftermarket motorcycle parts are parts that independent manufacturers produce as replacements for stock parts that came with a motorcycle. These manufacturers design the parts themselves, and they often intend for aftermarket parts to be upgrades over stock parts.

When it comes to a motorcycle's exhaust system, aftermarket parts can improve engine performance by increasing the efficiency with which the exhaust system removes fumes from the engine's cylinders. More efficient exhaust results in more efficient intake of fresh air for more powerful combustion. Aftermarket exhaust parts can also reduce the exhaust system's weight. Few motorcycle manufacturers use carbon fibre exhaust parts during production, but aftermarket parts producers offer parts made from this lightweight material. Furthermore, riders can fit aftermarket silencers to bikes to change the sound that the exhaust system produces. Lastly, aftermarket bike exhaust parts can alter a bike's look. Riders can opt for coloured heat shields, for example, to add eye-catching detail to motorcycles.

Finding Compatible Aftermarket Exhaust Parts

Ensuring the compatibility of aftermarket bike exhaust parts is of paramount importance if the parts are to deliver the kind of performance consumers expect. Exhaust systems are designed to work with two-stroke or four-stroke bike engines. The table below summarises the differences between the systems.

Engine Type



Piston moves up and down once each in combustion cycle; intake and exhaust both occur on downward stroke; air compression and spark plug lighting of air-fuel mixture occur on upward stroke


Piston moves up and down twice each in combustion cycle; intake on first downward movement; compression on first upward movement; spark plug ignition and combustion send piston down again; exhaust as piston rises again

Two-stroke engines are generally more powerful than four-stroke engines since the engine fires on every revolution as opposed to every other revolution on a four-stroke engine.

Each cylinder has a piston, and the number of cylinders the engine has also determines exhaust compatibility. The more cylinders an engine has, the more powerful the exhaust system must be. The Kawasaki EX250 is an example of a bike with a two-cylinder engine, whereas Honda CBR bikes have four cylinders. Sellers that offer solid customer service on aftermarket bike exhaust parts should make it easy for consumers to determine whether or not those parts are compatible with the bikes in question.

Ensuring Emissions Compliance

A bike's exhaust system is a critical component of managing the bike's emissions. The British government regulates automobile emissions as means of reducing air pollution, so those considering fitting a bike's exhaust system with aftermarket parts should consult the local council about local emissions laws. Consumers can then check with sellers of aftermarket bike exhaust parts to ensure that these parts are in line with British emissions regulations.

Know Your Aftermarket Bike Exhaust Parts

One of the primary purposes of aftermarket bike exhaust parts is to improve engine performance. Consumers should therefore understand how parts such as manifolds and headers, pipes, silencers, and guards and heat shields help motorcycle engines produce more power.

Manifolds and Headers

The exhaust manifold,, or header, is a series of tubes that collect the fumes that engine cylinders produce in the combustion cycle. The number of tubes that a manifold has equals the number of cylinders on the engine. A manifold for a two-cylinder engine should have two tubes, and a manifold for a four-cylinder engine should have four tubes. Manifolds generally comprise multiple metal layers to keep the heat contained to the inner layer, enabling the outer layer to remain relatively cool to the touch.


The pipe,, or mid-pipe as it is also called, transfers fumes from the manifold to the silencer at the end of the exhaust system. It is usually a single pipe that takes all of the fumes that the manifold collected from the engine's cylinders. It also helps remove heat from the bike's engine, so the pipe itself can get hot to the touch.


The pressure of fumes against the piping of an exhaust system creates a great deal of noise. A silencer diminishes this sound by absorbing much of the pressure from the fumes at the tail end of the exhaust system. This causes some back build-up of pressure, which can moderate engine performance. Many aftermarket silencers dampen less of the pressure and improve engine performance versus stock silencers.

Sometimes, fitting an aftermarket silencer is a cosmetic decision. Some riders may prefer cone-shaped megas, while others may like the look of cylindrical silencers. The size of the silencer also affects the look of a bike. Those who go for the "naked" look for a motorcycle may opt for a smaller silencer.

Guards and Heat Shields

Guards and heat shields are important aftermarket bike exhaust parts for enhancing engine performance and ensuring the safety of riders. These wraps dissipate some of the heat in an exhaust system, preventing it from backing up into the engine. Warmer air is less dense than cold air and therefore provides less oxygen for combustion. Keeping the air in the engine cooler therefore increases power. Exhaust systems can also run hot enough to burn riders if they come into direct contact with the system's piping, so guards and heat shields can prevent injuries.

How to Buy Aftermarket Bike Exhaust Parts on eBay

You can buy aftermarket bike exhaust parts from local and online motorcycle parts dealers and from other bike owners via classified ads. You can also buy these parts on eBay.. It is easy to search the site for the parts you want, and you can find local sellers to purchase from in order to reduce shipping costs.

Searching for Aftermarket Bike Exhaust Parts

You can search for aftermarket bike exhaust parts from any eBay page with the search bar. Enter a term, such as "silencer&", and choose the category related to motorcycle parts and accessories. Then, select aftermarket bike parts producers, such as LeoVince, from the options for part manufacturers. This should leave you with aftermarket listings for the exhaust part you want.

Buying From Local Sellers

The closer a seller is located to you, the less shipping your aftermarket bike exhaust part is likely to cost. You can find local sellers by specifying the distance from your postcode within which sellers should be located, and eBay then filters results accordingly.


Buying aftermarket bike exhaust parts is a good way to improve a motorcycle engine's performance. Aftermarket parts accomplish this by enhancing the exhaust system's ability to remove dirty air from the engine and make way for intake of clean air for more powerful combustion. Purchasing the right parts, however, requires solid consumer knowledge. Those who want to enhance a bike's exhaust system should understand how an exhaust system works, what the benefits of aftermarket parts are, how to find compatible aftermarket parts, and how to keep their exhaust system street-legal when choosing the parts to buy. Consumers should also understand what the various parts do within an exhaust system.

eBay is a good source to buy aftermarket bike exhaust parts from. Learning how to search the site helps consumers quickly find the parts they want, and knowing how to find local sellers can reduce shipping costs. By combining knowledge of aftermarket bike exhaust parts with a basic understanding of how to use eBay, consumers can improve their motorcycles' performance and keep their enhancement costs down at the same time.

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