Dirt Bikes

How Fast Do Dirt Bikes Go? Complete Guide

While selecting a dirt bike, people often consider other conditions like the bike model, state, and engine but what about its speed? If you are the parent of a dirt bike rider, consider the speed factor in mind. Even riding a dirt bike through obstacles and other terrain, you must know how fast do dirt bikes go. It will allow you to balance the speed of the bike accordingly.

Short Answer

If we talk about the average speed of dirt bikes, they can typically achieve speeds between 50 – 60 miles per hour. However, it depends on factors like engine, horsepower, and land on which you will ride your dirt bike. But you should consider that these dirt bikes are designed for fun and exploring; it’s not about the speed especially.

Today we explore dirt bike speeds, how fast they can go, and more.

Can The Size of A Dirt Bike Affect Its Speed?

It is selecting the dirt bike according to your desire based on factors like does it fit you well, whether you are a dirt bike expert, intermediate or new to this, and its speed. If you want to buy a dirt bike that doesn’t fit you well but is high in speed, is there any point in buying that?

So, if we talk about adults, they can choose from the 230cc to 450cc range, while children or younger adults can select the dirt bike from 50cc to 150cc.

You can also consider these details that define what makes your dirt bikes go faster.

  • The bikes with more cc can go faster than less cc.
  • If the bike is with less cubic capacity, it will be slower.
  • There are bikes also available that have 110cc engines and small sizing.
  • If the load on the bike is heavy, it can affect the bike’s speed to slow down.

Motocross riders are some of the most physically and mentally fit individuals in the sporting realm. The grueling challenges they face on the track test their physical endurance and push the boundaries of their mental resilience.

How Fast Can A Dirt Bike Go According To Engine Size?

How Fast Can A Dirt Bike Go According To Engine Size

Here are details about how fast do dirt bikes go:

  • 50cc Dirt Bike

A dirt bike with a 50cc engine typically reaches speeds between 25 and 40 miles per hour. It’s suitable for younger riders in the first half of middle school due to its easy handling and control.

  • 65cc Dirt Bike

The 65cc class of dirt bikes is considered a beginner class, suitable for riders under 12 with some dirt bike experience. These bikes can reach a top speed of approximately 62 miles per hour.

  • 80cc Dirt Bike

An 80cc dirt bike usually achieves speeds of 45-55 mph. There is a wide variety of engine configurations within the dirt bike industry, including two- and four-stroke 80cc bikes that can reach speeds of over 50 mph and even up to 70 mph.

  • 100cc Dirt Bike

Dirt bikes with a 100cc engine speed of around 60 miles per hour. However, the actual top speed can vary depending on engine adjustments and the presence of a secondary carburetor, ranging from 60 to 80 mph.

  • 110cc Dirt Bike

Dirt bikes equipped with a 110cc engine can reach up to 50 mph speeds. Some newer and more expensive models may have top speeds of up to 55 mph. Achieving top speed requires proper tires, a functioning radiator and air filter, and a well-maintained track.

  • 125cc Dirt Bike

Compared to a 55cc dirt bike that reaches speeds of approximately 55 mph, a 125cc dirt bike can go closer to 60 mph. heavier riders can exceed these speeds on downhill roads, but caution is advised as stunt riding is strongly discouraged by dirt bike manufacturers due to the associated risks.

  • 125cc 4-stroke Dirt Bike

While both 125cc 4-stroke dirt bikes, the maximum speed can vary significantly, ranging from 35 to 55 miles per hour. The top speed of a 125cc 4-stroke bike depends on the specific model.

  • 150cc Dirt Bike

How fast do dirt bikes go with 150cc? A dirt bike with a 150cc engine typically achieves around 60 miles per hour. There are various methods to increase the top speed of a 150cc dirt bike, but it requires practice to reach its maximum speed.

  • 200cc Dirt Bike

A dirt bike powered by a 200cc engine can travel up to 60 miles per hour, significantly improving over a 50cc dirt bike. Bikes with 200cc or larger engines often feature four-stroke engines with high horsepower, making them more powerful and challenging to handle.

  • 250cc Dirt Bike

The top speed of a dirt bike with a 250cc engine can range from 70 to 80 miles per hour, depending on the specific model and other factors. Both 2-stroke and 4-stroke motorcycles may have slightly different top speeds, but the variation is minimal.

  • 400cc Dirt Bike

Dirt bikes with a 400cc engine can have a wide range of top speeds depending on the model, but on average, they can reach up to 87 miles per hour. Increasing the engine size to 400cc provides a noticeable boost in velocity.

  • 450cc Dirt Bike

A 450cc dirt bike, popular among riders weighing more than 160 pounds, can reach speeds up to 90 mph or even higher before reaching its limit. However, bike modifications, rider weight, engine stroke, wind resistance, gear ratios, and surface conditions can influence the top speed.

  • Electric Dirt Bike

Electric dirt bikes generally have top speeds ranging from 12 to 22 miles per hour. Smaller electric bikes suit kids, while larger ones are better for adults. However, according to local regulations and laws, there are legal restrictions on how fast electric dirt bikes can travel in public places.

Dirt Bike Speed Comparison

Engine SizeTop Speed Range (mph)Top Speed Range (km/h)
50cc25-40 mph40-64 km/h
65ccUp to 62 mphUp to 100 km/h
80cc45-55 mph72-88 km/h
100cc60-80 mph97-129 km/h
110ccUp to 55 mphUp to 88 km/h
125ccAround 60 mphAround 97 km/h
125cc 4-stroke35-55 mph56-88 km/h
150ccAround 60 mphAround 97 km/h
200ccUp to 60 mphUp to 97 km/h
250cc70-80 mph113-129 km/h
400ccUp to 87 mphUp to 140 km/h
450ccUp to 90 mphUp to 145 km/h
Electric12-22 mph19-35 km/h
Table of Dirt Bike Speed Comparison

How Can You Measure Your Dirt Bike’s Speed?

How Can You Measure Your Dirt Bike's Speed

How fast do dirt bikes go, or are you looking to determine the speed of your dirt bike? Here’s a guide on how to measure it accurately:

Required equipment

  • Speedometer: Use a speedometer that directly measures speed in miles per hour.
  • GPS Unit: Utilize a GPS unit to measure distance and time traveled.
  • Clock: Have a clock handy to record the duration of your ride.
  • Tape: Use a tape measure to determine the distance the dirt bike covers.
  • Calculator: Employ a calculator to calculate average speed based on distance and time.
  • Measurement process:

Speedometer Measurement:

  1. Install a mechanical speedometer on your bike to measure your kid’s speed during dirt bike riding.
  2. Adjust the wheel-drive adapter on the tool according to the front wheel’s size. This allows the speedometer sensors to count the wheel rotations, measure distance, and calculate speed.
  3. Take note of ten measurements on the screen and calculate the average speed accordingly.

GPS Unit Measurement

Install a GPS app on a mobile phone and place it in your kid’s bag. The app will track their position and map the route.

Some apps automatically calculate average speed based on distance and time. Alternatively, you can use a calculator.

Clock and Odometer Measurement

  • Mark the start and finish lines on different terrains and have your kid ride between them.
  • Start a countdown clock when your kid begins riding, and stop it at the finish line.
  • Use a tape measure to determine the distance traveled in miles. Note the time taken for each measurement.
  • Divide the distance by the time using a calculator or an online tool. Calculate at least ten records to obtain a reliable average speed.

By following these methods and ensuring multiple measurements, you can accurately determine the average speed of your dirt bike.

What Factors Affect Dirt Bikes Speed?

What Factors Affect Dirt Bikes Speed

How fast do dirt bikes go? Dirt bikes come in various engine types, including 2-stroke and 4-stroke engines. While 2-stroke engines offer more power and torque at higher RPMs, stricter emission standards have made 4-stroke engines more common. The two choices depend on the rider’s preference and intended use.

  • Cooling system:

Cooling systems also play a role in a dirt bike’s top speed, with most bikes being air-cooled, although some use water cooling for better performance.

  • Brand of the bike:

The brand of the dirt bike is another factor to consider. Honda is known for popularizing off-road motorcycles, while many motocross racers favor Yamaha for their quality and performance.

  • Manufacturing quality:

Factors like funding for research and development, the use of advanced materials, and construction expertise also influence a dirt bike’s performance and top speed.

  • Riding Techniques

A rider’s skill level also affects dirt bike speed. Experienced riders, confident in their abilities, can ride faster by pushing their limits, understanding the terrain, and mastering controls. Proper gear shifting, braking, body positioning, and management contribute to faster speeds and stability.

  • Weight of rider:

Rider weight and height are crucial factors that influence the speed and performance of a dirt bike. They directly impact acceleration, top speed, handling, and maneuverability.

Personal demographics, such as the rider’s height, physique, and budget, can impact the top speed of a dirt bike. Heavier riders may experience slower speeds, while individual body position and bike utilization also play a role.

How Can I Achieve Maximum Speed On A Dirt Bike?

You achieve maximum speed on a dirt bike; it’s more complex than just giving more gas. It requires a combination of factors and techniques to unlock the bike’s full potential.

  • Body positioning

First, understanding how your body position affects the bike’s input is crucial. Proper positioning, such as leaning forward or backward, helps maintain control and balance.

  • Riding Techniques

Mastering riding techniques is also essential. This includes throttle control, clutch engagement, and braking techniques. Smooth and precise control of these elements enables quicker acceleration and sustained high speeds.

  • Know the terrains

Additionally, knowing the terrain you’ll be riding on is vital. Familiarity with the landscape allows you to anticipate obstacles, adjust your riding style, and take advantage of favorable sections for speed.

  • Gear shifting

Lastly, avoiding first gear can enhance speed. Shifting up to higher gears allows the engine to operate more efficiently and reach peak power output.

By combining these factors, riders can maximize their dirt bike’s speed regardless of its make or model. Practice, patience, and a focus on these techniques will help riders unlock exhilarating speed and performance on their dirt bikes.


How fast does a 450cc dirt bike go?

A 450cc dirt bike can reach 90 mph, providing excellent power and speed.

How fast can a 125cc dirt bike go in KM?

A 125cc dirt bike can go approximately 80 km/h, delivering a decent speed for off-road adventures.

Can a dirt bike go 100 mph?

Depending on the specific model and modifications, some dirt bikes can go 100 mph.

How fast is a 250cc dirt bike?

A 250cc dirt bike typically achieves 70-80 mph speeds, offering a balance of power and control.


In conclusion, to know How fast do dirt bikes go, the speed at which dirt bikes can go varies depending on engine size, bike design, terrain conditions, and rider skill. From smaller 50cc bikes with speeds of 25-40 mph to powerful 450cc bikes reaching speeds of 90+ mph, dirt bikes offer a range of options for riders seeking thrilling speeds. However, it’s important to note that speed is not the sole determinant of a dirt bike’s performance.

Factors like acceleration, handling, and maneuverability also contribute to the riding experience. Additionally, riders must prioritize safety and adhere to legal speed limits while operating dirt bikes. Whether it’s the exhilarating acceleration of a 2-stroke engine or the reliable power delivery of a 4-stroke engine, dirt bike enthusiasts can find the perfect balance of speed and performance to suit their preferences and skill level.

Yousaf Khan

Yousaf Khan is an experienced biker with over 10 years of riding experience. He has a passion for motorcycles and has traveled extensively on his bike, covering thousands of miles across various terrains. Yousaf is well-versed in different types of biking, including adventure riding, touring, and off-roading. He is an active member of several local and national motorcycle clubs, promoting safety and responsible riding. Yousaf's dedication to the biker community extends beyond his own riding, as he regularly shares his insights and experiences with fellow bikers around the world. When he's not on the road, Yousaf enjoys spending time with his family and sharing his knowledge through this blog.

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