One of the longest running motorcycle engines in terms of production is the Honda CB750 engine. Introduced in 1969, the CB750 engine revolutionized the motorcycle industry as the world's first mass-produced four-cylinder motorcycle engine. It played a significant role in popularizing the superbike segment.
The Honda CB750 engine has been produced in various iterations over the years, undergoing updates and improvements while maintaining its core design. Its durability, reliability, and performance made it a favorite among riders and contributed to its long production run. The engine's air-cooled, inline-four configuration became iconic and set a benchmark for future motorcycle engines.
While production of the original CB750 engine ceased in the 1980s, its influence is still felt today. Honda has continued to develop and produce engines based on the CB750 lineage, such as the modern CB1100, which pays homage to the original design. This lineage and its lasting impact make the CB750 engine one of the longest running and most influential motorcycle engines in history.