Dirt biking is an excellent activity for anyone who likes the speed and a 125cc dirt bike is an excellent choice for the youthful rider. A 125cc dirt bike is not going to be the quickest bike in the world but it can surely get up there in speed and in this post, I am going to discuss how fast can a 125cc dirt bike go.
The maximum speed for a 125cc 4-stroke dirt bike is it going to be about 50 miles per hour while the maximum speed for a 125cc 2-stroke dirt bike is going to be about 70 miles per hour.
It is all going to depend on the make and type of dirt bike and further the person riding the bike. If you have someone little and lightweight riding the bike, they are going to be ready to go a lot quicker than someone who is twice their weight. Plus, it is going to depend on the bike maker itself because the Honda 125cc bike leads to go a little bit quicker than the Yamaha 125cc bike.
The normal speed that I quoted above was taken from a broad range of bike models that were stock from the producer. It is moderately simple to add simple mods to the bike to make it go quite a bit faster but in this post, we are going to be talking about a stock bike. In this article we at BestComfortBike will give you the complete guide on how fast can a 125cc dirt bike go.Â
Table of Contents
Difference Between 2 Stroke And 4 Stroke
Not all the four-stroke dirt bikes are designed equivalent. There is a broad variety of top speeds across the various makes of bikes so you must do your research beforehand to know for sure. Some 125cc 4-stroke bikes will top out at around 35 miles per hour while the others can attain speeds of up to 55 miles per hour.
Take the Honda CRF 125 and the Yamaha TTR 125 as an example. The CRF has a more active throttle and can further go faster than the TTR. That being said, the TTR has other characteristics that are more useful such as more torque through all the gears and a more satisfying suspension. This is why it is necessary to do your analysis beforehand and figure out what you are looking for in a dirt bike.
The 2-strokes, on the other hand, are much quicker than the 4-strokes when you match the same sized bike. A 125cc 2-stroke bicycle will do laps around a 4-stroke. The 2-stroke bikes are much faster off the line and additionally have higher top speeds and that is why they are quite fit for the track racing.
Maximum Speed Of Yamaha 125
TTR 125: This is Yamaha’s 4-stroke dirt bike and it has a top speed of about 50 miles per hour. This is one of the bikes that I have and is about what I have felt (and others on the internet have as well). The producer sometimes undervalues the top speed on their bikes so it can sometimes be off.
YZ 125: This is Yamaha’s 2-stroke dirt bike and it has a top speed of nearly 70 miles per hour. It is much faster and quicker than the TTR and that is why it is extremely satisfactory for the track racing.
Maximum Speed Of Honda 125
CRF 125: This is Honda’s 4-stroke dirt bike and it has a top speed of about 55 miles per hour. I do not have this bike personally but this appears to be the consensus on the internet. It is quicker than the TTR but the TTR has more energy and is more convenient to ride.
CR 125: This is Honda’s 2-stroke dirt bike and it has a top speed of about 70 miles per hour. Repeat, I do not have this bike but this appears to be the average of what people are saying. The CR is moderately much the same as the YZ when it appears to the top speed.
Maximum Speed Of KTM 125
125 SX:Â The KTM just creates a 2-stroke 125cc dirt bike and it has a top speed of nearly 73 miles per hour. It is insignificantly faster than the YZ and the CR bikes and it additionally is more costly. If your child will be racing a lot and you need the best possible bike, this is seemingly it.
Maximum Speed Of Suzuki 125
DRZ 125: The Suzuki just creates a 4-stroke 125cc dirt bike and it has a top speed of nearly 50 miles per hour. It has an identical top speed as the TTR and is insignificantly less than the CRF. If I were to choose between them I would go with a Yamaha (1) or Honda (2).
There are additional bikes out there from various brands that could be faster or slower but these are the most well-known bike models. The Kawasaki does not create a 125cc dirt bike but they do have a 100cc 2-stroke and a 140cc 4-stroke.
Top Speed for Toddler
Most maximum of the time, dirt bikes with 125cc are for children and teens. Even though this article concentrated on the pros of top speed and how to get the fastest bike, as a parent you would not desire to provide your children the fastest bike in the store. Let us recap some of the facts and talk about why.
- Most 125cc dirt bikes can reach their top speed in as few as 4 seconds
- The 125cc dirt bikes can go anywhere from 37 to 60mph and more
- Even if the organization you purchase your bike from says its maximum speed is 50mph, users report that it can go faster
- The Faster bikes are not always more satisfying for the obstacle riding
- The faster your bike can go, the more control you require to have of it
How Much Time Does It Take To Reach Top Speeds?
The dirt bikes do not usually reach the top speeds because they are always turning corners on the road or you will be riding on rocky roads on the trails. The acceleration is usually more valuable than the top speed itself and the time it needs to get there will depend on whether you are on a 2-stroke or a 4-stroke.
The 2-strokes are much faster to accelerate related to the 4-strokes and that is why they are usually utilized on the trail. A 125cc 2-stroke could simply reach its top speed in below 5 seconds while a 4-stroke would need a little bit longer. It is further going to depend on the biker’s experience level and besides their weight.
If you have an absolute newcomer on a 2-stroke dirt bike they apparently would not be ready to handle the power and will end up spinning out (and taking much longer to get to top speed). Furthermore, if you are a lot heavier than the other person it will take you a lot longer to top out. But on normal, the numbers I stated appear to be the consensus.
Dangers Of Speed
No matter what you are on, anything that rolls can be serious if you do not have the skill. A 125cc dirt bike is principally for older kids (who usually do not have much expertise on a bike). If you are going to be getting your child a dirt bike you are just going to have to admit the truth that they will fall.
Even a 50cc bike can get going and there is always the possibility you will end up failing. I have had my honest share of falls over the years (on all sizes of bikes) and each time I have learned what I did wrong. Get your child some protection gear, show them how to accurately work the bike, and let them learn from their actions.
Circumstances that Defines How Fast Can a 125cc Dirt Bike Go
Have you ever visited the dirt bike races? If you have you must have overheard news and declarations about which rider or dirt bike was the quickest on a delivered territory. These bikes appear in various sizes and various engine capacities.
Though, the normal speed of these bikes ranges according to the engine size, sprocket gearing, modifications, and several other underlying circumstances. Here is a complete explanation of what defines the speed of dirt bikes, particularly those with the 125cc engine size.
1: The Engine Size
As stated earlier, all kinds of motorbikes appear in various engine sizes. This circumstance plays a particularly important role when it appears to the speed and the horsepower of the bike.
Unnecessary to tell, the regular dirt bikes have their engines ranging from 50cc to 140 ccs. Most maximum of the producers go the additional mile of creating other versions with the engine sizes ranging from the 175cc to 250 ccs but these engine capacities are way beyond the standard motorbike class that exemplifies dirt bikes.
To stay informed of other varieties of bikes such as bit bikes, dirt bikes are intended to reach the highest revolution per minute (rpm) faster in each gear. When riding on short segments utilizing the lower gears, the top speed may vary between 15 and 25 miles per hour if it is a 50cc bike. But on longer segments, the bike can achieve a top speed that is in the range of 50 miles per hour.
When it appears to the 125cc dirt bike (perfect with the stock sprocket gearing) you should demand to reach 70 miles per hour top speed when riding on high gear. Hence, the engine size is a key factor that will define the speed with which your dirt bike will go.
2: The Sprocket Gearing
You require to know that the smaller front drive sprocket and the larger rear sprocket gearings are able of creating the base ratio gear for your dirt bike. This is made by the producers in a bid to target more customers in the store today.
The base gear ratio is accomplished by just setting up dirt bikes with a sprocket gearing mixture that is able of giving you will the overall performance.
More frequently than not, the regular sprocket gearing setup is usually 14/42. This indicates that the 14-tooth drive sprocket gear is on the front side of your bike while the 42-tooth sprocket gearing is found at the rear.
When you use the engine rotations per minute red line as your benchmark, you will understand that the normal speed of (for example) of a 50cc dirt bike ranges from 22 to 25 miles per hour.
This research is based only on the 15 miles per hour top speed when you engage the first gear.
On the other hand, you may reach 50 miles per hour top speed when utilizing the gear. This shows you that when you use the same red line benchmark to your 125cc dirt bike, the average speed is likely to come to 35 miles per hour. From this data, you can simply tell that the sprocket gearing on a 125cc dirt bike is one of the driving forces of how fast it can go.
3: The Modifications
The modifications are important when it arrives in rising or reducing the speed of your dirt bike. In this regard, enhancing speed is the just positive way of seeing it. After all, everyone wants to have their dirt bikes going fairly faster than their competitors.
Guessing you need to enhance your bike’s normal speed without compromising its low-end torque acceleration, how will you reach this feat? The answer is easy and clear. You will start by renewing one of your dirt bike’s stock sprockets.
For example, you may modify the bike’s stock 14 tooth drive sprocket to a 15 tooth sprocket to achieve the top speed. Furthermore replacing your bike’s stock 42 tooth rear sprocket gearing with a 32-tooth sprocket gearing will join the speed but change the low-end torque acceleration.
Quite a several 50cc race mechanics would favor a gain of not more than 3 miles per hour normal speed outstanding as a way of changing the bike’s speed. That is not a bad plan thinking that dirt bikes are intended principally for the most challenging of terrains that no other regular bikes can survive.
By combining 5 miles per hour to your 125cc standard of 35 miles per hour, you will be building the distinction between being in the first group of bikers or the center while dirt bike expedition.
In other words, knowing how the sprocket gearing works provides you an idea of increasing your bikes’ average speed without really compromising energy acceleration.
The torque acceleration, in this view, is important to help your bike gain top speeds in a subject of minutes or seconds. The modifications can increase the speed of your dirt bike by a large margin and set you ahead of other riders.
4: Time Trials
For you to know the normal speed of your dirt bike, you can turn to time trials. This sort of trial was created to help riders in establishing the correct speed their dirt bikes can go.
To get the actual outcomes, you will have to begin by establishing a course (of a particular distance) and then enlisting a novice dirt bike rider, a timekeeper, and a skillful rider.
Let each rider to go for at least three laps on that particular course to obtain the average data. Once you are done with this exercise, you will be astonished to understand that the data you have received is expected to correspond with the predictions based on your dirt bike’s engine size as well as sprocket gearing.
In the end, you might come up with a result that tells the normal speed in miles per hour for your dirt bike is straight proportional to the rider’s experience and level of expertise.
For the security features of these bikes, you can simply say that the more moderate speed of dirt bikes, when contrasted with the larger bikes, can be described as a deliberate move on the producers’ part.
In easy words, your security interests while on your dirt bike depend on the builders’ terms of the same model of bikes. These time trials play a vital role in guaranteeing that you know the top normal speed your 125cc dirt bike can go despite where you are riding it.
Final Verdict
From the analysis, you can simply tell how fast can a 125cc dirt bike go. The normal speed that this kind of bike can achieve is within 55 and 60 miles per hour depending on the territory.
The speed could even go ahead 60mph if you are riding downhill but the makers of these bikes caution riders against going behind the normal top speed for security purposes.
For your dirt bike to reach such speed limits, you require to think about some factors. These factors involve the engine size(in this state the engine size is 125cc), sprocket gearing, modifications, and time trials among others.
