This manual covers the 2003 KTM SX, MXC, and EXC series motorcycles, featuring 125cc, 200cc, 250cc, and 300cc engine variants. These high-performance off-road motorcycles were engineered for motocross, cross-country, and enduro racing, renowned for their potent two-stroke engines, agile chassis, and advanced WP suspension. KTM's Austrian heritage and 'Ready to Race' philosophy are evident in these models, which competed fiercely with leading Japanese and European brands. Key features include powerful liquid-cooled engines, hydraulic disc brakes, and a distinct orange styling, all designed for competitive off-road use.

The purpose of this manual is to provide comprehensive guidance for owners and technicians. It details essential maintenance procedures, including pre-ride inspections, fluid changes, filter cleaning, and component checks, along with troubleshooting common issues. The manual covers the engine, fuel system, ignition, lubrication, cooling, chassis, suspension, brakes, and electrical systems. While focusing on owner-level maintenance and basic repairs, it offers clear instructions and technical specifications to ensure the longevity and optimal performance of your KTM motorcycle.