Not all 1000cc and 600cc motorcycles have four cylinders. The number of cylinders in a motorcycle engine can vary based on the design and manufacturer's specifications. Both 1000cc and 600cc motorcycles can come with different cylinder configurations, including two, three, four, or even six cylinders.
Historically, four-cylinder engines have been popular in sport bikes, including 1000cc and 600cc models, due to their high power output and smooth performance. However, advancements in engine technology have led to the development of motorcycles with fewer cylinders that still offer excellent performance.
For example, there are 1000cc motorcycles with inline-four engines, V4 engines, and even parallel-twin engines. Similarly, 600cc motorcycles can have inline-four engines, inline-three engines, or parallel-twin engines, among others.
It's important to note that the engine capacity (such as 1000cc or 600cc) refers to the total displacement of the engine cylinders, while the number of cylinders determines the engine's configuration and characteristics. The choice of cylinder configuration depends on factors such as power delivery, weight, cost, and the intended use of the motorcycle.