This manual covers the KTM 125 SX, 200 SX, MXC, and EXC models, designed for performance off-road riding. These motorcycles are known for their lightweight, agile chassis and powerful two-stroke, liquid-cooled engines, catering to motocross, cross-country, and enduro disciplines. KTM's 'Ready to Race' philosophy is evident in these machines, which were refined through the late 1990s and early 2000s, offering a competitive edge in their respective classes. Their robust engineering and focus on rider control have made them popular choices for both recreational and competitive off-road enthusiasts.

This comprehensive workshop service and repair manual provides factory-level detail for the 1999 through 2002 model years. It covers all essential systems, including engine, transmission, chassis, suspension, braking, and electrical components. Detailed procedures for maintenance, repair, troubleshooting, and diagnostics are included, along with critical technical specifications, torque values, and wiring diagrams. This manual is an indispensable resource for owners, mechanics, and technicians aiming to maintain, repair, and optimize the performance and longevity of their KTM off-road motorcycles.