Is 100cc Fast? Everything You Need To Know!

While 125cc karting is a popular form of racing, the closely related 100cc variant is less well-known in the karting world. In spite of the greater power and lighter chassis, it is an ideal category for karting beginners!

How fast can a go-kart with a 100cc engine reach? 100cc go karts can reach speeds of 60 to 70 mph. A number of factors affect results, such as driver weight,  track conditions, engine type (2 stroke-4stroke) and many others.

Karting is a sport filled with excitement and speed, but there is much more to it than you think! There are differences between two-cycling and four-cycling, as well as how kart owners should always have fun first. Isn’t it about time we got started?

Examples of speeds for 100cc go-karts

Example of 100cc karts

The numbers may not be exact, but it’s very useful to have a concrete number when evaluating speed potential. I have scoured the current industry for racing karts with engines that are compatible with these kart chassis to show how fast they are:

  • BirelART RY30-S11, RoK Vortex VLR Engine – 68mph
  • Tony Kart Racer 401R, Yamaha KT100 Engine – 66mph

I have already outlined the parameters for top speed, but it is quite clear how these karts differ in their top speed. Depending on the engine cycle, the speeds of a CRG chassis and a BirelART chassis differ significantly.

There are only two places in a 2-cycle engine where the piston will move, and it has far fewer parts. They use only one piston, which is lighter and more efficient than a 4-cycle engine. Since it completes combustion faster, it is more efficient.

An engine with four pistons (usually two but up to four can be found) requires combustion to occur in four different positions for combustion to occur. This results in faster speed output than the rather plucky 2-cycle engines as a result of the control provided.

Even though there are more pistons on a 4-cycle and you would expect a higher speed for it, the power is dispensed in smaller bursts as a result. A lower top speed is achievable thanks to the longer engine run time.

For their karts, go-kart enthusiasts usually opt for 2-cycle engines that are more powerful and exciting. An engine with four cycles has several benefits, including a longer lifespan and a higher level of reliability.

The Honda GX100 is a 4-cycle engine, whereas all the others are 2-cycle engines, as you can see from the list above. There is still a noticeable speed difference between the 2-cycle engines of the bunch due to the IAME having fewer horsepower than the RoK Vortex.

It’s not all about top speed!

Whether you are talking about go-karting or motorsports in general, it’s a given that speed is king. When it comes to go-karts, there are other important aspects to consider than top speed.

Since I have already pointed out that this IAME engine has a lower horsepower output than the others, then it comes as no surprise that these engines are still popular with fans around the world. Due to their ease of maintenance and popularity, race series widely use them.

When choosing displacement for your engine, it is important to find the number of races using that amount of displacement. You can always find races using 125cc engines in the United States, for example. Consider the 100cc engines first if you’re thinking about one.

Choosing a specific engine brand will then follow. In order to keep the playing field even for these four groups of riders, Yamaha, RoK Vortex, and Honda will all be in separate brackets; therefore, the researchers will also have to explore this another aspect.

As your engine of choice, you should pick one from a company that is widely used. Sometimes that isn’t the fastest of the bunch!

In addition, remember that a new engine is similar to a new chassis when it comes to a blank canvas. I looked at only factory standard pressures, so you can tune it to produce faster top-line speeds than those listed here.

As someone who has been fascinated with high speeds and the thrill of racing karts since I was five years old, I can understand why a list of top speeds appeals to me. Since I’ve raced both sides of the race, I highly recommend that you consider all your options before choosing one!

What are the benefits of 100cc?

is 100cc fast

Certainly it’s a very difficult question to answer, and I’m sure all of you are considering it right now. The 125cc class is the top category all over the world, so why would you opt to race in the 100cc class?

Personally, I have found that 100cc engines are ideal for adults who have never ridden a go-kart, yet wish to become kart owners – regardless of whether they want to race or simply enjoy practicing.

Rental karts are typically powered by 60cc or 100cc engines, and can reach speeds of up to 50mph. The difference between the 100cc engines you’ll buy for your own chassis and the 600cc engines we have in this car isn’t astronomical. I guess I’d be intimidated by the 125cc which can go up to 80 mph if I had never karted before.

Step management is key, and they differ in size and shape depending on the individual. Although some enthusiasts would prefer to work their way up to the 125cc level, others would rather live the thrill of the 125cc scene.

Additionally, I consider 100cc to be a good stage for Cadet drivers who are just getting started, as well as someone who wants to grow as a rider. The typical age of a Cadet kart is 12 years old, at which point they go straight to 125cc karts as Juniors.

Cadet-aged drivers who might have a difficult time transitioning to a 100cc kart from 60cc karts can benefit from 100cc variants which help hone their expertise and confidence as drivers.

cadet racing currently is dominated by karts at the top levels that are faster and bigger, so a smaller, more gradual progression may be preferable for young drivers than a bigger, faster kart at the lower levels.

If you qualify for any of the above categories, you should choose this category. As fun and exciting as 125cc is for some, it isn’t for everyone nor is it available everywhere. It would be great if you could get involved with it!

100cc Go-Karts: What You Should Look For

The decision of what to pick is a highly personal one and it is quite difficult to offer advice on this. A lightweight chassis might be ideal for some people, while others may seek out some cutting-edge features that can give them an edge in racing, and so on.

The first thing you should do is conduct extensive research about chassis suitable for 100cc engines. There is much more concern about whether the engine will fit into the available space than whether the chassis will support it.

A go-kart chassis is usually constructed out of 30mm or 32mm moly tubing for adults. With a 100cc engine, you will always want to choose the 30mm tubing option, since it will be lighter and therefore easier to propel.

Whether you want a kart from a local manufacturer or a dealer, you need to do some research first. Find out how the company makes its karts for the general public, as well as their background.

If you pick a chassis made by someone nearby, you’ll be able to get spare parts much more easily than trying to guess online all the time! Additionally, you can make friends in your area who can offer advice on fixing issues or help out with other technical issues, which is a lot of fun.

You might also check the kart’s wear plate if you’re buying a used one. Chassis for go-karts are largely made of tubing, so it’s very important to maintain them. That won’t be an issue if you have a wear plate!

The plate underneath gives you peace of mind that the kart is structurally sound. It is likely that the tubes themselves are hard-worn if the plate appears severely damaged.

What Kart Would I Purchase?

Is 100cc fast?

I picked my lineup of karts not only because the top speeds are comparable, but also because they’re all karts I’d be glad to own. A kart racer who has experience and enjoys fun will pick out one among the remainder for me as the standout.

My top pick has to be the Tony Kart Racer 401R, largely because I’ve long admired Tony Kart’s racing heritage, but also because I know how detail-oriented they are in their chassis-making.

Due to the fact that the Racer has been a major part of karting for over 20 years, I feel like I’d be owning a piece of history by owning the latest rendition.

It would also be possible to run any of the 2-cycle engines in my previous paragraph, so this would be an extremely versatile kart. Personal preference would probably be the IAME engine since I am familiar with them, but the RoK Vortex engine has the advantage of being more powerful.

An entirely new chassis from Tony Kart can be quite expensive. However, when you consider the history of titles they have won in World Karting Championships, it proves to be well worth the investment.

For a racer who is serious about racing, this kart is ideal.


That’s it! The different engines on five different karts are compared to see how much variation in speed there is in the 100cc category. A tune-up of an old favorite will allow you to compete with even the best of the best! As I mentioned above, speed isn’t the end-all for winning.


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