{"id":5065,"date":"2022-08-21T01:08:00","date_gmt":"2022-08-21T01:08:00","guid":{"rendered":"https:\/\/bikefinest.com\/?p=5065"},"modified":"2022-08-21T01:11:01","modified_gmt":"2022-08-21T01:11:01","slug":"how-fast-does-a-100cc-dirt-bike-go","status":"publish","type":"post","link":"https:\/\/bikefinest.com\/how-fast-does-a-100cc-dirt-bike-go\/","title":{"rendered":"How Fast Does A 100cc Dirt Bike Go?"},"content":{"rendered":"\n

Generally, more experienced young dirt racers are likely to want more speed from their dirt bikes, and that\u2019s where a 100cc engine comes in. But how fast does a 100cc dirt bike go?<\/p>\n\n\n\n

A high-end 100cc dirt bike can go at a top speed of 45-65mph depending on the engine strength and maintenance, rider\u2019s weight and experience, terrain, and suspension.<\/strong><\/p>\n\n\n\n

Note, nonetheless, that the engine stroke, which determines the dirt bike\u2019s weight, also determines the dirt bike\u2019s top speed. In that case, two-stroke engines, which generally weigh less, than 4-stroke engines, enjoy more power and speed.  <\/p>\n\n\n\n

To help you understand what I mean, I\u2019ll discuss the engine stroke in detail. But before I do, let me take you through a few 100cc basics.    <\/p>\n\n\n

\n
\"how<\/figure><\/div>\n\n\n

The Basics of 100cc Dirt Bikes<\/h2>\n\n\n\n

Essentially, a 100cc rating on a dirt bike means the bike has a 100 centimeters cubic engine. This displacement capacity offers the dirt bike the quality you need to compete at a motocross racing event.<\/p>\n\n\n\n

Here are the dirt bike\u2019s basics:<\/p>\n\n\n\n

1. Rider\u2019s Age<\/h3>\n\n\n\n

Essentially, kids from 9-10 years can ride a 100cc dirt bike, and even some adults, especially those of medium height (up to 162cm) and weighing under 160 pounds.<\/p>\n\n\n\n

2. Seat Height<\/h3>\n\n\n\n

While you can use the age to determine if a given 100c dirt bike<\/a> can fit you, you can only get a perfect size if you get the seat height correctly.<\/p>\n\n\n\n

Here\u2019s a table matching the rider\u2019s height with the seat height:<\/p>\n\n\n\n

Rider\u2019s Height<\/strong><\/td>Seat Height<\/strong><\/td><\/tr>
140cm<\/td>24-26\u201d<\/td><\/tr>
143cm<\/td>26-31\u201d<\/td><\/tr>
157cm<\/td>31-35\u201d<\/td><\/tr>
162cm<\/td>33-36\u201d<\/td><\/tr>
172cm<\/td>34-38\u201d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

3. Horsepower and Transmission<\/h3>\n\n\n\n

A 100cc engine is powerful. Thus, you can count on it for sufficient horsepower, about 50HP or more. Essentially, the top speed is due to its impressive horsepower.<\/p>\n\n\n\n

Another factor that determines its speed and ease of riding is the transmission system, which is mostly automatic. A few 100cc dirt bikes, however, have a manual transmission.<\/p>\n\n\n\n

4. Engine Stroke<\/h3>\n\n\n\n

100cc dirt bikes feature either a 4-stroke or 2-stroke engine, impacting their top speed. Generally, a 4-stroke engine generates sufficient power for each two crank movements, eliminating jerks and promoting a smooth ride.<\/p>\n\n\n\n

A 2-stroke engine, on the other hand, generates power for each single crank movement, making it more powerful. It\u2019s, however, jerky, unlike a 4-stroke.<\/p>\n\n\n\n

5. Speed<\/h3>\n\n\n\n

When it comes to the top speed, 100cc dirt bikes can average 45mph or more, depending on the type of engine stroke, among other factors.<\/p>\n\n\n\n

6. Load Limit and Bike Weight<\/h3>\n\n\n\n

Most 100cc dirt bikes weigh 160-190 pounds and can bear up to 160 pounds. Overall, most of its weight is due to its engine. While comparing the engines, 4-stroke engines are heavier<\/p>\n\n\n

\n
\"How<\/figure><\/div>\n\n\n

Essentially, How Fast Does A 100cc Dirt Bike Go?<\/h2>\n\n\n\n

Top-end 100cc dirt bikes can register a top speed of 45-65mph, depending on the engine type (stroke), among other factors, which I\u2019ll discuss next.<\/p>\n\n\n\n

For now, it\u2019s worth knowing that 2-stroke and 4-stroke 100cc dirt bikes register different top speeds.<\/p>\n\n\n\n

How Fast Does A 100cc 2 Stroke Dirt Bike Go?<\/h3>\n\n\n\n

A 2-stroke 80cc dirt bike is more powerful than its 2-stroke equivalent under the same conditions. So it enjoys a higher speed limit. You can count on most 2-stroke 100cc dirt bikes to hit a maximum speed of 55-65mph.   <\/p>\n\n\n\n

How Fast Does A 100cc 4-Stroke Dirt Bike Go?<\/h3>\n\n\n\n

With a 4-stroke 80cc being slightly heavier than its 2-stroke equal, its speed is slightly lower. On average, 4-stroke 100cc dirt bikes can hit a 45-55mph top speed. There are, nevertheless, a few exceptions that run under this range or above it.<\/p>\n\n\n\n

How Fast is a 100cc Dirt Bike Compared to Others?<\/h3>\n\n\n\n

When it comes to the displacement capacities of dirt bikes\u2019 engines, the higher the capacity, the more powerful the engine and the speedier the dirt bike.<\/p>\n\n\n\n

So, under the same conditions, a 100cc dirt bike outraces a 70cc<\/strong><\/a>, 65cc<\/strong><\/a>, and 40cc<\/strong><\/a> dirt bike while it\u2019s slower than a 125cc<\/strong><\/a>, 250cc<\/strong><\/a>, and 450cc dirt bike.<\/p>\n\n\n\n

Here\u2019s a chart showing how a 100cc dirt bike compares to the rest. Use it to understand how fast dirt bikes go<\/strong><\/a> in general.<\/p>\n\n\n\n

CC Capacity<\/strong><\/td>Potential Top Speed<\/strong><\/td><\/tr>
40cc<\/td>15-22mph<\/td><\/tr>
65cc<\/td>30-45mph<\/td><\/tr>
70cc<\/td>40-50mph<\/td><\/tr>
100cc<\/td>45-65mph<\/td><\/tr>
125cc<\/td>45-75mph<\/td><\/tr>
250cc<\/td>70-85mph<\/td><\/tr>
450cc<\/td>80-90mph<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Factors Determining How Fast 100cc Dirt Bikes Go<\/h3>\n\n\n\n

Essentially, these factors determine how fast a 100cc dirt bike can go and hit top speed:<\/p>\n\n\n\n

a) Engine Strength and Maintenance<\/h4>\n\n\n\n

A considerable part of a dirt bike\u2019s top speed depends on its engine. Usually, the stronger its engine, the better it performs, and the faster it\u2019s likely to go.<\/p>\n\n\n\n

For that reason, it\u2019s recommendable to service the engine regularly and preferably use high-octane fuel.<\/p>\n\n\n\n

b) Rider\u2019s Weight<\/h4>\n\n\n\n

Most 100cc dirt bikes can bear a maximum of 150-170 pounds. It all depends on their build quality and suspension.<\/p>\n\n\n\n

In terms of speed, the lower the load, the likelier you are to ride faster. That means not only should you look at your weight but even the gears.<\/p>\n\n\n

\n
\"How<\/figure><\/div>\n\n\n

c) Rider Experience<\/h4>\n\n\n\n

It takes good bike handling skills and confidence to hit top speed with a 100cc dirt bike. So, the more experienced you are at racing with a dirt bike, the likelier you are to go faster and attain top speed.<\/p>\n\n\n\n

d) Terrain<\/h4>\n\n\n\n

A 100c dirt bike can only attain its top speed if you ride it on suitable terrain. It doesn\u2019t necessarily have to be smooth as dirt bikes are off-road intended.<\/p>\n\n\n\n

However, the fewer the obstacles, dust, and gravel and the less steep the terrain, the faster you are likely to go.<\/p>\n\n\n\n

e) Suspension<\/h4>\n\n\n\n

A suspension is an integral part of a dirt bike\u2019s comfort, and it significantly determines how fast you can go. Generally, you are more likely to ride more quickly when your 100cc dirt bike feels comfortable, and a considerable part of that depends on the suspension.<\/p>\n\n\n\n

So, the stronger the suspension, the more stable the dirt bike, and the faster you are likely to go.<\/p>\n\n\n\n

How to Reach Top Speed with 100cc Dirt Bike<\/h3>\n\n\n\n

Honestly, reaching a 45-65mph top speed with a dirt bike<\/a> is not easier. So, you have to do a few things that require effort.<\/p>\n\n\n\n

Overall, these tips can help you attain top speed with a 100cc dirt bike:<\/p>\n\n\n\n