The 450 MXC Racing, produced between 2000 and 2003, is a high-performance competition motorcycle renowned for its prowess in motocross and off-road racing. Built with a legacy of engineering excellence, this model embodies a commitment to delivering powerful, agile, and reliable machines tailored for demanding racing environments. Its four-stroke, liquid-cooled engine, typically in the 450cc class, provides robust power delivery, complemented by a responsive chassis and adjustable suspension designed to tackle varied terrain and optimize rider control. The 450 MXC Racing represents a significant entry in the competitive off-road segment, a testament to dedication to performance and success on the track. This comprehensive English-language Workshop Service Repair Manual is designed to provide detailed guidance for the maintenance and repair of the 450 MXC Racing models from 2000 to 2003. It covers all essential systems, including complete engine overhauls, transmission servicing, chassis adjustments, brake system diagnostics, and electrical system troubleshooting. The manual offers step-by-step instructions for routine maintenance, component repair, and in-depth troubleshooting, ensuring owners and technicians can effectively preserve the motorcycle's optimal performance and longevity. With factory-level detail, this manual is an indispensable resource for anyone involved with the care and upkeep of this specialized racing machine.