This manual covers the KTM 65SX and 60SX models produced between 2003 and 2007. These mini motocross bikes are renowned for their performance in youth off-road competition, embodying KTM's 'Ready to Race' philosophy. Engineered for demanding racing environments, they feature robust, liquid-cooled 65cc two-stroke engines, a 6-speed manual transmission with a wet multi-plate clutch, and a durable chromoly steel perimeter frame. The 65SX platform has a strong heritage in motorsports, consistently achieving success in championships and earning a reputation as a benchmark in its class for performance and reliability.

This comprehensive workshop service and repair manual provides essential, detailed information for maintaining and repairing the critical engine components of the KTM 65SX and 60SX. It covers engine assembly and disassembly, top and bottom end procedures, cooling and lubrication systems, fuel and ignition systems, and the exhaust system. The manual includes detailed maintenance procedures, such as recommended service intervals for piston and ring replacement, top-end rebuilds, and gearbox oil changes, alongside fluid specifications and troubleshooting guides for common wear items and carburetor tuning. This resource is designed to assist owners, mechanics, and technicians in ensuring optimal performance and longevity for these competitive youth motocross bikes.