This manual covers the KX125 and KX250, iconic performance off-road motorcycles renowned for their racing heritage and aggressive capabilities. These models, particularly those from the M1 Model generation, have a long history of dominating motocross and supercross circuits, celebrated for their potent two-stroke engines, agile handling, and durable construction. Designed for enthusiasts and competitive riders, the KX series offers a thrilling off-road experience, backed by an extensive legacy in motorsport.

This comprehensive service repair manual in English provides in-depth guidance for the maintenance, troubleshooting, and repair of your KX125 or KX250. It details procedures for all major systems, including the engine, transmission, suspension, brakes, and electrical components, offering step-by-step instructions for everything from routine servicing to complete overhauls. The manual is an essential resource for owners and technicians aiming to preserve the peak performance and longevity of these high-performance motocross machines.