The Kawasaki KX85, KX85 II, and KX100 models represent a lineage of potent 2-stroke competition motocross motorcycles, produced from 2001 through 2011. Renowned for their powerful 2-stroke engines, agile handling, and race-ready performance, these bikes are a popular choice for young riders and aspiring motocross competitors. Building on Kawasaki's extensive motorsports heritage, the KX series has consistently been refined through racing development, offering a competitive edge in its class. These machines are engineered for demanding off-road use, providing riders with a direct connection to the track and a platform for honing their skills. This comprehensive service manual is designed to be an indispensable resource for owners and technicians alike, covering all essential aspects of maintenance and repair for the 2001-2011 Kawasaki KX85, KX85 II, and KX100 models. It provides detailed, step-by-step instructions for engine overhauls, transmission and drivetrain servicing, chassis and suspension adjustments, brake system maintenance, and electrical system diagnostics. The manual also includes routine maintenance procedures, troubleshooting guides for common issues, and specifications for special tools. With its in-depth coverage and clear explanations, this manual empowers users to effectively maintain, diagnose, and repair their motorcycles, ensuring optimal performance and longevity.