This manual covers KTM 125 SX, 125 MXC, 125 EXC, 200 SX, 200 MXC, and 200 EXC off-road competition and dual-sport motorcycles produced between 1999 and 2003. KTM, an Austrian manufacturer renowned for its racing heritage, engineered these lightweight, performance-oriented two-stroke motorcycles with potent engines, robust chromoly steel frames, and advanced WP suspension components. These models were designed for demanding off-road disciplines including motocross, cross-country, and enduro, competing with leading offerings from other major manufacturers.

This Workshop Service Manual (WSM) provides comprehensive service and repair information essential for maintaining and troubleshooting these KTM motorcycles. It details procedures for engine overhaul, transmission, clutch, suspension, brakes, fuel system, electrical systems, and chassis components. The manual includes step-by-step repair instructions, diagnostic guidance, known issue resolutions, and critical technical specifications such as torque values and clearances, ensuring owners and technicians can effectively perform all necessary maintenance and repairs.