This manual covers the SX and EXC series motorcycles produced between 2000 and 2007, featuring the RFS engine platform across various displacements including 400cc, 450cc, and 525cc models. The renowned 'Ready to Race' philosophy is evident in these high-performance off-road machines, designed for competitive motocross and demanding enduro riding. These models are celebrated for their powerful engines, agile handling, and robust construction, making them a popular choice for both professional racers and dedicated off-road enthusiasts seeking exceptional performance and rider engagement.

This comprehensive factory service repair workshop manual provides detailed instructions for maintaining and repairing your SX or EXC motorcycle. It covers all essential systems, including engine mechanicals, fuel and ignition systems, cooling, transmission, suspension, braking, and electrical components. The manual includes step-by-step procedures for routine maintenance, engine rebuilds, suspension servicing, and electrical diagnostics, along with troubleshooting guides and technical specifications. Its thorough coverage ensures owners and technicians can effectively perform all necessary service and repair operations, maximizing the longevity and performance of the vehicle.