Yes, it is possible for a motorcycle to have four exhausts. The number of exhaust pipes on a motorcycle can vary depending on the design and configuration of the engine and exhaust system.
Motorcycles with multiple cylinders, such as four-cylinder or V4 engines, often have an exhaust pipe for each cylinder. In these cases, you will typically see four exhaust pipes, one for each cylinder, exiting the motorcycle.
Having multiple exhaust pipes can serve several purposes. It can improve engine performance by allowing each cylinder to have its own dedicated exhaust pathway, reducing exhaust back pressure and improving exhaust gas flow. Additionally, it can contribute to the overall aesthetics and sound characteristics of the motorcycle.
Some motorcycles may have multiple exhaust pipes for design or cosmetic purposes, even if the engine configuration is different, such as a V-twin or inline twin. The number of exhaust pipes on a motorcycle can vary widely depending on the manufacturer's design choices and the desired performance and aesthetic goals for the bike.