The KTM 660 RALLY is a high-performance off-road motorcycle engineered for extreme durability and reliability in demanding rally raid events. Produced between 1998 and 2005, this machine embodies KTM's strong heritage in off-road racing, building upon the robust LC4 engine platform. It is designed for professional rally racers and experienced off-road enthusiasts who require a competition-bred motorcycle with exceptional power delivery and the capability to withstand harsh terrain. Key features include a powerful single-cylinder, liquid-cooled engine, long-travel WP suspension, and a durable chromoly steel trellis frame, all contributing to its legendary performance in rally stages.

This comprehensive Service Repair Manual provides essential information for the maintenance, repair, and troubleshooting of the KTM 660 RALLY for the years 1998 through 2005. It covers all major systems, including complete engine mechanicals, chassis, suspension, brakes, and the electrical system. The manual details routine maintenance procedures, engine rebuild processes, and offers diagnostic flowcharts for common issues. Its purpose is to empower owners, mechanics, and technicians with the knowledge needed to keep this specialized motorcycle in optimal condition, ensuring its performance and longevity in competitive environments.