How fast does a 125cc pit bike go?

The speed of a 125cc pit bike depends on several factors, including the bike's design, gearing, and terrain. Generally, a 125cc pit bike can reach a top speed of around 45 to 65 miles per hour (70 to 105 kilometers per hour).

In ideal conditions, on flat terrain, and with a rider weighing approximately 150 pounds (68 kilograms), the bike may approach the higher end of this range, while on rough terrain or with a heavier rider, the top speed may be closer to the lower end. Additionally, modifications such as changing the gearing or installing performance parts can affect the bike's top speed.