This manual covers the KTM 125 SX, 250 SX, 125 EXC, and 250 EXC models from the 2006 production year. These high-performance off-road motorcycles are known for their robust two-stroke, single-cylinder engines and are designed for demanding motocross and enduro applications. KTM's reputation for engineering excellence, innovative chassis design, and success in professional racing underpins these models, offering riders potent power delivery and agile handling. The SX variants are specifically tuned for motocross competition, while the EXC models are equipped for enduro riding, both benefiting from KTM's commitment to durable and capable off-road machinery.

This comprehensive service and repair manual provides detailed information for owners, mechanics, and technicians. It covers all aspects of engine repair, from top-end to bottom-end components, including disassembly, inspection, overhaul, assembly, and troubleshooting. The manual offers in-depth guidance on engine systems, repair procedures, and technical specifications, ensuring that maintenance and repair tasks are performed correctly. With an estimated 300-400 pages, this document is designed to be a definitive resource for keeping your 2006 KTM 125/250 SX/EXC operating at peak performance and reliability.