The term "125cc engine" refers to the engine displacement of a motorcycle or any other vehicle. Engine displacement is a measure of the total volume swept by all the pistons inside the engine's cylinders. It is typically measured in cubic centimeters (cc) or liters.
In the case of a 125cc engine, it means that the total displacement of all the cylinders in the engine is 125 cubic centimeters. This measurement provides a general indication of the engine's size and power output.
In many countries, motorcycles with 125cc engines are popular for various reasons. They are often considered entry-level or beginner-friendly motorcycles due to their manageable power and lightweight characteristics. They are commonly used for commuting, urban riding, or as stepping stones for new riders before they progress to more powerful motorcycles.
It's worth noting that engine displacement alone does not determine the overall performance of a motorcycle. Other factors such as engine design, technology, tuning, and other specifications (such as the number of cylinders) also play a significant role in the bike's power, torque, and overall performance.