139cc equals how many horsepower?

Explanation:

To calculate the approximate horsepower of a 139cc engine, you can use the following formula:

Horsepower = (Engine displacement in cubic centimeters / 15) x 0.75

So, for a 139cc engine:

Horsepower = (139 / 15) x 0.75

= 9.26

This means that a 139cc engine has approximately 9.26 horsepower.