How long does a 4 stroke dirt bike engine last?

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The life of a dirt bike engine is totally dependent on the rider and maintenance. We will be discussing this query “How long does a 4 stroke dirt bike engine last”, but first let me give you a direct idea. According to experts, a 4 stroke dirt bike engine lasts for at least 10 to 20 years. The life of a 4 stroke dirt bike engine is totally dependent on the rider. The life of a four-stroke dirt bike engine is basically directly related to its maintenance and if you want your four-stroke dirt bike engine to last longer you have to treat it right.

In this article, I am going to provide you a detailed guide on how long a dirt bike engine lasts. An engine is a machine and the life of every machine depends on user management and performance. Relation of a rider with his bike is very important. If a rider loves his bike he would love to maintain it regularly. I have seen many bikes with a four-stroke engine and they were 30 to 50 years old. They were still running as new.

Honda is serving the riders for decades and they have created tremendous dirt bikes, and that’s why I have seen most of the old bikes that were of Honda.

Tips to increase the life of a 4 stroke dirt bike engine

By following these simple tips you can easily increase the life of your dirt bike engine:

1. Check the Oil Regularly

A Four-stroke dirt bike has Mobil-oil, you have to check the quality of the Mobil-oil regularly if the quality goes bad instantly change the Mobil-oil of your four-stroke dirt bike engine.

2. Change the oil filter

Oil filter is a very essential component in a dirt bike engine. A four-stoke dirt bike engine has a filter to filter the oil and provide pure oil to the combustion chamber. You should change the oil filter after 3000 to 4000 kilometers.

3. Change the air filter

The air filter is to filter the air and provide pure air to the combustion chamber of the dirt bike engine. Air filters get useless after a 7000 to 8000 kilometers ride, so don’t forget to change them regularly after this time period.

4. Check the spark plug

A spark plug is responsible for the ignition of the fuel. You should be smart enough to read your spark plug. A spark plug with thick black sooty streaks can be a problem, read more about how to read a spark plug.

Check some best 4 stroke dirt bikes for beginners.


The simple answer to the question, how long a 4 stroke dirt bike engine lasts is not easy to answer directly. You have to consider a lot of factors, before a final estimation.

Proper maintenance of a four-stroke dirt bike engine can greatly increase the performance and life of a four-stroke dirt bike engine. A four-stroke dirt bike engine produces more heat as compared to a 2-stroke engine and that’s why it gets more hot compare to a 2 stroke engine.

It is not suitable for longer rides, If you want to increase the life span of your dirt bike simply don’t overuse it.

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