This manual covers the 2003 KTM 125 SX, 200 SX, 250 SX, 125 EXC, 200 EXC, 250 EXC, 300 EXC, 125 MXC, 200 MXC, and 300 MXC models. These Austrian-built off-road competition motorcycles are renowned for their lightweight, agile chromoly steel perimeter frames, powerful liquid-cooled two-stroke engines, and high-quality WP suspension components. Known for their aggressive styling and strong braking performance, KTM's SX, EXC, and MXC lines have a rich heritage in motocross and enduro racing, offering riders a competitive edge with their performance-tuned engines and advanced chassis for their era.

This owner's manual provides essential information for the operation, maintenance, and basic adjustments of your 2003 KTM off-road motorcycle. It details key areas such as engine care, fuel system, ignition, chassis, suspension, brakes, and the electrical system. The manual includes procedures for pre-ride inspections, cleaning, lubrication, chain adjustment, air filter maintenance, spark plug checks, and carburetor adjustments, along with guidance on fluid specifications and common maintenance intervals. Its purpose is to assist owners and technicians in keeping these performance-oriented machines in optimal condition, ensuring reliability and longevity through proper care and routine servicing.