301es

The 301es is a French two-stroke motorcycle engine model developed by the Société des Moteurs 301es (SM301es), a company founded in 1946 by Marcel Masuy. The engine was designed to be compact, lightweight, and efficient, making it popular for use in motorcycles, mopeds, and small vehicles during the mid-20th century.

The 301es engine was notable for its innovative design, featuring a single-cylinder, air-cooled configuration with a capacity of approximately 300 cubic centimeters (cc). It utilized a two-stroke combustion cycle, which provided a high power-to-weight ratio and simplicity in operation. The engine was known for its smooth performance and reliability, contributing to its widespread adoption in various applications.

In the 1950s and 1960s, the 301es engine became particularly associated with the French motorcycle manufacturer Motobécane, which integrated it into several of its models. These motorcycles were widely used in Europe, often favored for their affordability, ease of maintenance, and practicality. The engine’s design also made it suitable for customization, allowing enthusiasts to modify it for increased performance or different applications.

Over time, the 301es engine fell out of production as motorcycle technology evolved, with four-stroke engines and more advanced two-stroke designs gaining prominence. However, its legacy endures among vintage motorcycle collectors and restorers, who appreciate its historical significance and mechanical simplicity. Today, the 301es remains a notable example of mid-century French engineering, celebrated for its contribution to the development of lightweight, efficient small engines.