Most dirt bike enthusiasts will tell you that 250cc bikes are the perfect size for a variety of reasons. They’re not too small to be boring and not too large to be difficult to manage. And they’re fast as well. But exactly how fast?
Well, most people assume that they can only reach speeds of around 60 or 70 mph. While this is true for smaller 250cc dirt bikes, there are a few that can break the 85 mph barrier.
In this post, we’ll take a look at some of the fastest 250cc dirt bikes on the market and see how they compare to each other. So, if you’re curious about just how fast a 250cc dirt bike can go, keep reading!
What is a 250cc dirt bike and what are its features?
A 250cc motocross bike is a type of motorcycle that is designed for off-road riding. These bikes typically have smaller engines than other types of motorcycles, and they are often lighter in weight as well.
In addition to that, their small size and light weight make them easier to maneuver on rough terrain, and their engines provide enough power to get them up steep hills and over obstacles.
How much horsepower does a 250cc dirt bike have?
A 250cc dirt bike typically has around 30-40 horsepower. However, there can be some variation based on the specific model and make of the bike.
For example, a Honda CRF250R has an output of 39.0 horsepower, while a Suzuki RM-Z250 has an output of 36.3 horsepower. Generally speaking, the more expensive and higher the quality of the bike, the more horsepower it will have.
However, even a basic 250cc dirt bike will have plenty of power for most riders. With around 30 horsepower on tap, these bikes are capable of reaching top speeds of close to 90 miles per hour.
So whether you’re looking for speed or simply want a powerful bike for off-road riding, a 250cc dirt bike is sure to deliver. That may not sound like much, but when you consider that the average car has around 100 horsepower, it’s clear that these bikes pack a serious punch. And when you factor in their lightweight and nimble handling.
The best 250 cc bikes and their top speed
Among the 250cc dirt bikes, some units are dominating the market heavily. It’s due to their magnificent performance and practical result on the real track.
Let’s have a look at the top five 250cc dirt bikes with a few details in the following…
Honda CRF250R
The Honda CRF250R is a powerhouse of a dirt bike, with a top speed that will leave even the most experienced riders feeling exhilarated. Capable of reaching speeds of up to 67 miles per hour, the CRF250R is one of the fastest dirt bikes on the market.
And with a lightweight body frame and ultra smooth handling, it’s easy to see why this bike is so popular among racing enthusiasts. As long as you’re hitting the motocross track or exploring off-road trails, the Honda CRF250R is sure to provide an unforgettable riding experience.
Kawasaki KX250F
Here we have the best 250cc unit from the Kawasaki so that you can have an idea of how fast a Kawasaki 250 dirt bike goes.
Kawasaki’s KX250F dirt bike has a top speed of approximately 100 miles per hour. Kawasaki achieved this speed by beefing up the bike’s power output and adding a larger fuel tank.
Moreover, the KX250F is equipped with a four-stroke, single-cylinder engine that produces 39.6 horsepower. Kawasaki also offers a two-stroke version of the KX250F, which has a slightly higher top speed of 85 miles per hour.
Husqvarna FE250
One of the most important aspects of any dirt bike is its top speed. After all, when you’re flying down the trail, you want to know that your bike can handle the terrain. So how fast does a Husqvarna FE250 dirt bike go?
The answer may surprise you. While the exact top speed will vary depending on the conditions, most Husqvarna FE250s can reach speeds in excess of 75 miles per hour.
It doesn’t matter if you’re hitting the track or tearing up the trails, you can rest assured that your Husqvarna FE250 will get you there quickly. And with a top speed like that, you’ll be sure to leave your competition in the dust.
Suzuki DRZ 250
The top speed of a Suzuki DRZ 250 dirt bike is approximately 65 miles per hour. This speed is attainable on a variety of terrain, including flat surfaces and downhill slopes.
Plus, the bike’s lightweight design and powerful engine make it a good choice for riders who are looking for a fast and agile dirt bike. However, the bike’s small size can make it difficult to control at high speeds, so riders should be experienced before attempting to reach the top speed.
KTM 250 SX
Although the top speed of a KTM 250 SX dirt bike varies depending on the model and year, most bikes have a top speed between 60 and 70 miles per hour. However, some newer models may be able to reach speeds up to 85 miles per hour.
The top speed of a KTM 250 SX dirt bike is determined by a number of factors, including engine size, tire size, and gearing. Ultimately, the best way to determine the top speed of your KTM 250 SX dirt bike is to consult the owner’s manual or test it out on the open road.
250cc 2-stroke dirt bikes vs 250cc 4-stroke dirt bike
When it comes to dirt bike racing, there is no one-size-fits-all answer to the question of which is better: a 250cc 2-stroke or a 250cc 4-stroke dirt bike? Ultimately, it comes down to your taste and the way you ride. That said, there are a few key considerations that can help you make the best choice for your needs.
First of all, take a look at the power output of each engine type. So how fast is a 250cc 2-stroke dirt bike? One of the best 250cc 2-stroke motocross is the KTM 250 XC that can achieve up to 85 mph. A 250cc 2-stroke engine will typically offer more power than a comparable 4-stroke engine, making it a good choice for riders who want maximum performance.
However, this increased power can also lead to increased fuel consumption and emissions, so it’s important to weigh your needs against the potential environmental impact.
Secondly, consider the weight of each type of bike. A 4-stroke dirt bike will usually be heavier than a 2-stroke, which can make it more difficult to maneuver on tight trails.
On the other hand, the extra weight can also provide better stability at high speeds, making it a good choice for riders who want to go fast. Ultimately, the best way to decide which type of bike is right for you is to test ride both and see which feels best for your specific riding style.
How does tire pressure affect the top speed of a 250 cc dirt bike?
Your bike’s top speed is directly affected by the amount of air in your tires. A higher air pressure results in less rolling resistance, which leads to a higher top speed. The bike can, however, become unstable and difficult to control if there is too much air pressure.
Tire pressure for a 250cc dirt bike should be between 18-22 psi. This will provide enough grip and stability for most riding conditions while still allowing the bike to reach high speeds.
The moment your motocross bikes pressure falls less than 18 psi you will surely lose the top speed approximately 5-20 mph which is a red flag for the racing time.
The tire pressure may need to be increased slightly if you plan to ride in extremely bumpy or icy conditions. Find the right tire pressure for your bike and riding style by experimenting with different pressures.
Can clutch adjustment & old clutch influence the top speed?
Slipping of the clutch occurs due to the bad adjustment or simply worn out clutch. In both case you will not be able to reach the top speed of your favorite dirt bike.
A mint condition Yamaha YZ250F has top speed of 65mph but with a worn-out clutch or unadjusted clutch, you will notice the reduction of top speed up to 10-15 mph.
The clutch serves as a means of reducing friction between the engine and transmission, so yes, the clutch is necessary. Chain drives connect the engine and transmission, which allow the two to spin at different speeds.
Additionally, you can adjust the clutch so it engages at higher or lower RPMs. Since it determines how quickly you can accelerate or slow down from a stop, changing the engagement point can change your top speed.
Pull off the kill switch while the bike is in neutral, and then hold down the clutch lever while releasing the brake pedal slowly.
If you hear a high-pitched whine coming from under your seat (or see smoke coming from under there), then the engine is spinning faster than the transmission, which means that it’s slipping inside of its gear ratio range. Adjusting this set point should fix any slippage problems.
How can throttle adjustment impact the speed of a dirt bike?
An improper throttle setting will not reduce the top speed but definitely hamper the acceleration of the dirt bike. On top notch state, a Honda CRF250R can go 0-60 mph at 5 second while a bad throttle adjustment will cut the overall acceleration as you might reach 0-60 mph at 6-10 seconds.
In an engine, the throttle controls the amount of power it receives. Your bike will go faster if you apply more power. So, what impact does throttle adjustment have on dirt bike speed? Here’s your answer:
1. Change in Throttle Position
You can change the throttle position by moving your hand forward or backward on the grip. This will cause the engine rpm to increase or decrease respectively. This will also affect your speed as well.
2. Change in Throttle Opening Amount
The amount at which you open your throttle has a direct effect on how fast your bike will go and how much fuel you use per minute. If you want to go faster or save fuel, try opening up your throttle more by pulling it all the way back until it clicks into place.
Can an old and loose chain affect the top speed of a 250cc dirt bike?
While most 250cc dirt bikes have an average top speed of around 65-85 mph it can fall due to problems in the chain. However, if your bike has an old or loose chain, it can affect your top speed. For example: if you ride a HONDA CRF250R which can hit up to 67 mph then you will lose approximately 8-15 mph compared to the original top speed.
The mechanism of a dirt bike is that, from the engine to the wheels, power is transferred through the chain. If it is loose, it can cause the engine to work harder and eventually overheat. This can lead to reduced power and a decrease in top speed. In addition, a loose chain can cause the wheels to slip, which will also reduce your top speed.
Therefore, if you want to maintain a high top speed, it is important to keep your chain tight and in good condition.
Final Words
I tried to interlink and connect all the relevant things that have something to do with the speed of the 250 cc dirt bike. Now, you might tell a lot about how fast a 250cc dirt bike is!
250cc dirt bikes are definitely worth purchasing if you are considering them. Though it’s not suitable for a beginner, a moderate rider with little experience is going to love this machine.
A comparatively bigger engine will help you to show the skills and jumps backed by the crazy level acceleration. Having a strong gut is a must to roll out with these mind boggling bikes and hopefully, you have one!
