This service repair manual covers the KTM 125 Duke and 200 Duke models from the production years 1999 through 2003. These lightweight performance street motorcycles are known for their agile handling and distinctive styling, drawing from KTM's strong motorsports heritage. The Duke series represents KTM's commitment to rider engagement, offering a dynamic experience in the naked street bike segment. Engineered for performance and reliability, these models feature robust steel trellis frames and efficient single-cylinder, 4-stroke engines.

This manual provides comprehensive technical guidance for owners and technicians, covering all essential aspects of maintenance and repair. It details engine overhaul procedures, fuel and ignition system servicing, cooling and exhaust system maintenance, and transmission and clutch repairs. Furthermore, the manual includes in-depth information on chassis and frame inspection, suspension adjustments, brake system service, wheel and tire care, and electrical system diagnostics. With detailed torque specifications, clearances, and troubleshooting guides, this resource ensures the optimal performance and longevity of your KTM 125 Duke or 200 Duke.