How fast does 125 cc four wheeler go?

The maximum speed of a 125 cc four wheeler depends on several factors, such as the make and model of the vehicle, engine power, terrain, and weight of the driver. Typically, a 125 cc four wheeler can reach speeds of up to 45 - 50 miles per hour (72 - 80 kilometers per hour) on flat terrain. However, speeds may vary significantly depending on specific conditions and modifications made to the vehicle. It's essential to refer to the manufacturer's specifications and safety guidelines for accurate information regarding the top speed of a particular 125 cc four wheeler.