In the context of motorcycles, CC stands for "cubic centimeters." It is a unit of measurement used to indicate the displacement or engine capacity of a motorcycle's engine. The displacement refers to the total volume swept by all the pistons inside the cylinders of an engine during one complete combustion cycle.
When you see a motorcycle referred to as a "100cc bike" or a "350cc bike," it means that the engine of that motorcycle has a displacement or capacity of 100 cubic centimeters or 350 cubic centimeters, respectively. The CC measurement is often used as a quick way to classify and compare the size and power output of different motorcycles.
As a general rule, a higher CC value indicates a larger engine and potentially more power, although there are other factors such as design, technology, and tuning that can influence a motorcycle's performance as well.