This workshop service and repair manual covers all variants of the K1100LT and K1100RS models produced between 1999 and 2000. These motorcycles are renowned for their German engineering, featuring a liquid-cooled, 1093 cc inline four-cylinder engine with Bosch Motronic electronic fuel injection and a 5-speed manual transmission. Known for their comfortable touring capabilities and stable handling, the K1100 series represents a significant evolution in BMW's K-series line, offering a blend of performance and refinement. This manual provides comprehensive coverage for owners and technicians, detailing the robust construction and advanced features that define these iconic machines. This comprehensive manual serves as an indispensable guide for maintaining and repairing your K1100LT or K1100RS. It delves into all aspects of the motorcycle, including detailed procedures for engine disassembly and assembly, transmission servicing, electrical system diagnostics, chassis and suspension maintenance, and brake system overhauls. With extensive troubleshooting guides, technical specifications, and routine maintenance schedules, this manual empowers both owners and professional mechanics to ensure optimal performance and longevity. The over 500 pages of information, complete with detailed diagrams and illustrations, cover everything from basic oil changes to complex internal component repairs, making it the definitive resource for this exceptional motorcycle.