How to Make a Honda C90 Go Faster?

Who doesn’t love a little fast driving?

Unfortunately, though, a regular Honda C90 can’t reach those higher speeds.

Yet, with just a bit of work, you can push the limit on how fast the C90 can go. 

There are several ways to make a Honda C90 go faster, including getting better bearings, using a big bore kit, and installing a performance tuning chip. Or, you can try getting rid of any extra weight on your bike or buying a performance camshaft. 

In this article, I will detail how fast a standard Honda C90 can go as well as five methods you can attempt to increase the top speed. 

Then, I will go into the CC of the C90, how much the C90 weighs, and which Honda Super Cub is the fastest. 

How Fast Can a Standard Honda C90 Go?

A standard Honda C90 will cruise at around 50-55 mph (80-89 kph).  

However, you can usually get your bike up to 60 mph (97 kph) in perfect conditions. 

5 Methods to Make a Honda C90 Go Faster

In the following sections, I will describe some of the easiest and safest ways to make a Honda C90 go faster.  

Method One: Install Better Bearings 

Bearings are metal rings that reduce friction so that rotating shafts can move smoother. 

And when the shafts in your bike can more smoothly, you can reach higher speeds. 

So, go ahead and buy some high-quality bearings for your C90 and install them in place of the originals. 

Or, if you don’t want to swap out all the bearings, start with just the wheel bearings. 

Keep in mind, though, that swapping out the bearings won’t make your C90 go that much faster. 

At best, you may get an extra 5 mph (8 kph). 

Method Two: Use a Big Bore Kit 

A big bore kit usually comes with a piston kit, a larger bore cylinder, and better gaskets, and each one of these is essential for getting your C90 to higher speeds. 

The piston kit, for instance, will allow you to swap out your old piston for a superior one. 

Good pistons are essential to an engine’s performance because they convert the energy from engine combustion into mechanical energy. 

And you need this mechanical energy to get your vehicle moving. 

Thus, a better piston will help your C90 go faster because it will increase the engine’s power, causing your bike’s performance to improve. 

Cylinders, similarly, are another critical part of the engine system, and bigger bore cylinders boost performance. 

Basically, when you increase the diameter (bore) of the cylinder, you get a bigger valve opening, which allows more fuel and air into the cylinder. 

More fuel and air in the cylinder leads to more power. 

Finally, better gaskets keep everything in your engine appropriately sealed, leading to better overall performance. 

Therefore, if you really want to get the best possible engine performance and the most speed out of your Honda C90, a big bore kit is a good way to go. 

Method Three: Try a Performance Tuning Chip 

Performance tuning chips enhance certain parts of your C90s computer to give it more potential. 

And there are a lot of different types of performance chips out there, each of them capable of specific functions. 

The most common speed-enhancing performance tuning chip affects the information your C90 receives regarding air temperature. 

Basically, this type of tuning chip tells the computer that the air is cooler than it actually is. 

And since cold air has more oxygen, resulting in better combustion, the computer decides to send more gas to the engine. 

When this happens, you get a better-performing engine, which translates to more speed. 

However, you should keep in mind that there are some well-documented downsides to tuning chips. 

For instance, your pistons might wear out faster than they should, and you could experience a decrease in fuel economy. 

Yet, if you want a faster C90, performance tuning chips can definitely deliver the desired results. 

Method Four: Get Rid of Extra Weight

Did you know that weight is one of the most common factors that slow down a bike?

Thus, if you typically ride with an extra person, you will immediately notice a boost in speed when you drive by yourself. 

Similarly, getting rid of cargo can definitely make you go faster and make it easier to get up hills. 

You can also try swapping out parts on your C90 for lighter alternatives. 

For example, lightweight wheels can make quite a difference when it comes to speed. 

Method Five: Purchase a Performance Camshaft 

A performance camshaft is a camshaft that uses more of an engine’s potential. 

You see, the camshaft is a part of the engine that allows the engine’s valves to open in sync with the crankshaft. 

And the intake valves, in particular, are critical for engine performance because they let the air and fuel mixture into the engine’s cylinders. 

A performance camshaft, of course, alters the opening of these valves to increase engine performance by letting in more fuel. 

So, to get the most out of your C90, you should buy and install a performance camshaft. 

But, just make sure you do your research before purchasing because not all performance camshafts operate the same. 

You want to ensure you buy the camshaft that can give you the exact kind of performance upgrade you desire. 

What CC Is the Honda C90?

CC stands for “Cubic Centimeters,” and it measures the displacement in an engine. 

Understanding the CC of your bike is important because it determines how much space there is for the engine’s fuel and air mixture. 

And, of course, higher CC means more power and more speed. 

So, what CC is the Honda C90, and how does it compare to other bikes?

The Honda C90 has an 89cc engine. 

For comparison, the Honda C125 has a 125cc engine, which helps it reach higher speeds. 

Most other lightweight bikes fall somewhere between 50cc and 350cc, meaning that the C90 is near the lower end of the spectrum. 

How Heavy Is the Honda C90?

Since weight is one of the most significant factors determining potential top speed, it can be helpful to know how much the C90 typically weighs when it comes from the manufacturer. 

Generally, a standard Honda C90 weighs around 181 pounds (82 kg). 

So, if you want your C90 to go faster than the standard top speed, you should try to get it below this weight. 

Which Honda Super Cub Is the Fastest?

Overall, the Honda Super Cub C125 is the fastest of all the Super Cubs, as it has a top speed of about 65 mph (105 kph). 

And if you’re curious about the top speeds of other Honda Super Cubs, I’ve provided a list below. 

Honda Super Cubs top speeds: 

• C50 – 43 mph (69 kph)
• C65 – 40 mph (64 kph)
• C70 – 50 mph (80 kph)
• C100 – 40 to 42 mph (64-68 kph)

So, as you can see, the C90 is one of the fastest Super Cubs. 

Conclusion 

There are plenty of methods you can try to make the Honda C90 go faster, such as getting better bearings and installing a big bore kit. 

Or, you can try using a performance tuning chip, lowering the weight on the bike, or getting a performance camshaft.