CC stands for cubic centimeters, and it tells you how large the engine is. Generally, more ccs mean more power. However, it isn’t the only factor in how fast a motorcycle can go. You also have to consider the weight of the rider and the bike as well as how aerodynamic the bike is, the type of tires, the terrain, etc. But there is a loose correlation between more ccs and a faster, more powerful bike that can accelerate more quickly.