This manual covers the RS125 and Tuono models produced between 1999 and 2005. These lightweight sportbikes are renowned for their performance-oriented engineering and agile handling, drawing from a rich racing heritage. The RS125 variant offers aggressive styling and a focused riding experience, while the Tuono provides a more upright and versatile platform. Both models are celebrated for their premium feel and capability for spirited riding and track use, making them popular choices in their class.

This comprehensive service repair workshop manual provides detailed guidance for owners and technicians. It covers essential maintenance procedures, including routine servicing, fluid changes, and component lubrication, as well as in-depth troubleshooting for common issues. The manual includes extensive information on engine overhaul, fuel and cooling systems, ignition, transmission, brakes, suspension, and the electrical system. Step-by-step rebuilding instructions, calibration procedures, and critical torque specifications are also provided, ensuring that the RS125 and Tuono can be maintained and repaired to optimal performance standards.