CC (cubic centimeters) and CID (cubic inches) are units of measurement used to denote engine displacement, which is the volume swept by all the pistons in the engine's cylinders.
CC: Cubic centimeters (CC) is the metric unit of engine displacement commonly used around the world. It represents the total volume of all the cylinders in the engine. For example, if a motorcycle has a 500cc engine, it means the combined displacement of all the cylinders is 500 cubic centimeters.
CID: Cubic inches (CID) is an imperial unit of engine displacement primarily used in the United States. It represents the total volume of all the cylinders in cubic inches. For instance, if a motorcycle has a 100 cubic inch engine, it means the combined displacement of all the cylinders is 100 cubic inches.
To convert between CC and CID, you can use the following conversion factors: 1 cubic inch (CID) = 16.387064 cubic centimeters (CC)
1 cubic centimeter (CC) = 0.0610237 cubic inches (CID)
It's worth noting that CC is the more widely used unit of measurement for engine displacement in the motorcycle industry, especially outside of the United States. CID is more commonly used for measuring engine displacement in older American motorcycles or in some specific segments of the American market.