The KTM 450 SX-F is a high-performance motocross motorcycle, representing dedication to off-road racing excellence. Produced for the 2005, 2006, and 2007 model years, this machine is engineered for competitive motocross, offering a potent 4-stroke, single-cylinder, liquid-cooled engine with an approximate displacement of 450cc. Known for its robust chromoly steel frame and advanced suspension components, the 450 SX-F delivers sharp handling and responsive power delivery, making it a formidable contender against other leading motocross bikes of its era. Its design prioritizes raw performance and rider control on demanding race tracks. This comprehensive workshop service manual is designed to assist owners, mechanics, and technicians in the maintenance, repair, and troubleshooting of the KTM 450 SX-F. It covers all essential systems, including the engine, fuel system, ignition, cooling, transmission, suspension, brakes, and electrical components, providing detailed step-by-step procedures, technical specifications, torque values, and diagnostic information. With 127 printable pages of expert guidance, this English-language manual ensures that all aspects of the motorcycle's upkeep and repair can be addressed with precision and confidence, from routine servicing to complete component overhauls.