This manual covers the 125 Duke and 200 Duke models, with specific coverage for the 125 Duke (EU, DE) from 2012 and the 200 Duke (EU, 2013 COL) from 2013. These versatile motorcycles are powered by liquid-cooled, single-cylinder, 4-stroke engines, with the 125 Duke producing approximately 15 hp and the 200 Duke around 26 hp. Both models feature a 6-speed transmission and a steel trellis frame, embodying a reputation for performance-oriented engineering. The Duke series is known for its aggressive styling and agile handling, making these bikes suitable for a wide range of riding conditions. This comprehensive Service Repair Manual, presented in English, provides detailed step-by-step instructions, exploded diagrams, and technical specifications essential for maintaining and repairing your motorcycle. It covers all major systems, including the engine, chassis, and electrical components, as well as routine maintenance procedures, troubleshooting guidance, and specific repair processes. The manual is designed to assist owners and professional technicians alike in ensuring the longevity and optimal performance of the 125 Duke and 200 Duke models, comparable in detail to factory workshop manuals.