This manual pertains to the 650 Twin Series, encompassing models such as the 6T Thunderbird, TR6 Trophy, and T120 Bonneville, with engine numbers commencing from DU13375. These iconic British motorcycles, manufactured in Meriden, Warwickshire, are celebrated for their air-cooled, parallel-twin engines, which typically displaced 649 cc and featured overhead valve operation. Known for their robust engineering and distinctive styling, these bikes played a significant role in motorcycle culture throughout the 1950s and 1960s, becoming synonymous with performance and a classic aesthetic. Their legacy is marked by their enduring appeal to collectors and enthusiasts worldwide.

This comprehensive parts manual is designed to assist owners, restorers, mechanics, and parts suppliers in identifying and sourcing the correct components for the 650 Twin Series. It provides fully illustrated exploded views that clearly depict individual parts and their relationships within various systems, including the engine, fuel system, transmission, chassis, brakes, and electrical components. Essential for maintaining originality and functionality, this English-language manual includes specific part numbers for ordering, facilitating the crucial process of procuring accurate replacement parts for these classic machines.

This manual pertains to the 650 Twin Series, encompassing models such as the 6T Thunderbird, TR6 Trophy, and T120 Bonneville, with engine numbers commencing from DU13375. These iconic British motorcycles, manufactured in Meriden, Warwickshire, are celebrated for their air-cooled, parallel-twin engines, which typically displaced 649 cc and featured overhead valve operation. Known for their robust engineering and distinctive styling, these bikes played a significant role in motorcycle culture throughout the 1950s and 1960s, becoming synonymous with performance and a classic aesthetic. Their legacy is marked by their enduring appeal to collectors and enthusiasts worldwide.

This comprehensive parts manual is designed to assist owners, restorers, mechanics, and parts suppliers in identifying and sourcing the correct components for the 650 Twin Series. It provides fully illustrated exploded views that clearly depict individual parts and their relationships within various systems, including the engine, fuel system, transmission, chassis, brakes, and electrical components. Essential for maintaining originality and functionality, this English-language manual includes specific part numbers for ordering, facilitating the crucial process of procuring accurate replacement parts for these classic machines.