This book chronicles the development and evolution of Benelli's modern four-cylinder motorcycle models produced between 1974 and 1988. It details the lineage from the initial 500 Quattro through various upgrades and expansions of the range, including the 500LS, 504 Sport, 350RS, 354, 354 Sport, 654T, 654 Sport, and the 254 road bike. The author aims to provide a comprehensive overview of these Italian-designed machines, highlighting their expected handling and performance characteristics.

This book serves as a detailed historical reference for enthusiasts and historians of Italian motorcycles, specifically focusing on Benelli's four-cylinder models. The scope covers a significant design period, offering insights into the engineering and market positioning of these machines. The content is likely to appeal to collectors and those interested in the technical development of motorcycles from the late 20th century.