The normal idle speed of a motorcycle can vary depending on the specific make and model of the motorcycle. However, a typical idle speed for many motorcycles is around 1000 to 1200 revolutions per minute (RPM). This range provides a stable idle and allows the engine to run smoothly while the motorcycle is at rest. It's important to note that idle speeds can differ based on factors such as engine displacement, fueling system, and any modifications made to the motorcycle. For accurate information, it is always best to consult the owner's manual or manufacturer specifications for your particular motorcycle model.