If your motorcycle didn’t have an air filter, dust, dirt and all other airborne contaminants would be able to get into the engine. This would build up and eventually put a huge strain on the motor’s components, wearing down the pistons and cylinder walls. If the piston rings get damaged, gases may be able to escape from the combustion chamber, significantly impacting the engine’s performance.

In short, an effective filter is critical for a healthy motor. However, over time, the filter itself may become clogged with contaminants, which will prevent clean air from getting into the engine and reduce the vehicle’s power and fuel efficiency. This is why it is important to change it at recommended intervals.

Types of air filters

Material

Most air filters are made from paper or cellulose, foam, or an oil-coated cotton material. The quality of the component’s materials and its design ultimately determine its capacity to hold contaminants.

• Paper/cellulose

Paper-based air filters are very common as they are cheap to produce and easy to dispose of. However, this may also be a disadvantage because unlike some other components, the part cannot be cleaned or reused once it gets too dirty. They look fairly similar to the filters used in coffee machines, with small pores for trapping fine particles. The filtration element is pleated to increase its holding capacity and allow more air to flow through.

• Oiled cotton gauze filters

Cotton filtration components are usually the most expensive parts available due to their breathability and durability. They are typically used on high-performance bikes as they provide high-quality filtration at a rapid rate. Although the gauze is quite porous, the oil traps and prevents the contaminants in the air from passing through. The main advantage of these filters is that they can be reused multiple times. You may, however, have to purchase an additional cleaning and re-oiling kit.

• Foam filters

Also known as depth filters, they are often used for off-road vehicles or very dusty environments due to their ability to block out contaminants. Many of them are also saturated in oil to trap dirt and grime. They can last a long time but they require regular cleaning and oiling to function.

Manufacturer

You should also consider the brand and production quality of the product when looking for an aftermarket replacement. It is advisable to only select products from trusted manufacturers, such as K&N, Maxima or MUYI. K&N is probably the most well-known brand in Europe as it is an industry leader in automotive filtration technology. 

Design

Some air filters are intelligently designed to increase the engine’s horsepower. Your driving habits and environment should be taken into account when making a selection. They come in a variety of shapes and sizes. It is therefore important to check the compatibility of the part with your motorbike. For example, the K&N YA-6098 air filter is oval shaped and designed specifically for Yamaha FZS600 Fazer 600 bikes.   

When to change your motorbike’s air filter

According to the majority of recommendations, you should replace or clean your air filter once every 10,000 to 15,000 miles or once per year. However, if you are using a component made from paper and you regularly drive on dusty roads, it may be a good idea to replace it as often as every 6,000 miles to maintain the engine’s performance.

 

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