How Fast Does a 125cc Four-Wheeler Go?

Four-wheelers are a fun way to spend time in the great outdoors, but beginners may be a little unsure about speeding too quickly down a muddy track. How fast does a 125cc four-wheeler go?

How Fast Does a 125cc Four-Wheeler Go, and What Determines Its Speed?

The power output of "cc" engines is measured in cubic centimeters. A 125cc motor is the typical size for beginners and those who don't wish to ride too fast. When speaking about a new model fresh off the floor, a 125cc four-wheeler can go about 35-40 miles per hour, but certain elements will impact that speed in practice.

Gearing

ATVs have a gear ratio between the wheels and the engine. The sprocket size determines this ratio. The typical four-wheeler comes geared fairly low, but you can increase speed with certain changes. Smaller front sprockets and larger back sprockets over-rev the engine and give the machine greater speed.

Terrain

Beginners tend to stick to smoother roads, which means higher speeds. Smooth, flat terrain allows a 125cc four-wheeler to reach its maximum speed. As the terrain gets rougher, steeper, and more full of obstacles, this drops. Rocks, hills, sand, and mud will slow the vehicle down, sometimes significantly.

Tires

Depending on what you do with your ATV, the type of tires can determine the speed of a 125cc four-wheeler. With more tread, you'll have more traction and increased safety, but resistance will also increase and slow the machine down.

Thin tires have less traction. This allows the rider to possibly get the machine to its maximum speed.

Weight

Each ATV has a different weight capacity indicating how much weight the vehicle can carry and still function at peak performance. For example, the TrailMaster F125 Youth ATV has a weight capacity of 165 pounds. The rider, cargo, and additional accessories should not exceed this weight limit.

The more weight the ATV carries, the slower it will go. This is why it's important to stay within the recommended weight capacity. Even when under capacity, the machine may move slower than anticipated when the weight is near the limit.

How Fast Will a 125cc Four-Wheeler Go When Properly Maintained?

New ATV owners may not bother or forget to conduct maintenance and repairs on their machines. This not only decreases the life of the engine but can slow the vehicle down.

By following these few steps, you can keep your four-wheeler's top speed at 35-40 miles per hour for many years:

• Change the oil regularly, typically after 50-100 riding hours
• Properly inflate your tires and check them before each ride
• Clean and replace your air filter often

Another tip is to wash and inspect the four-wheeler after every ride. Look for broken parts that need repair and schedule to have them taken care of as soon as possible.

How Fast Does a 125cc Four-Wheeler Go at Motobuys?

How fast does a 125cc four-wheeler go? At Motobuys, we have a wide selection of 125cc four-wheelers that will go 35-40 miles per hour in the right conditions. Check out our options to learn more.