The BMW K1100LT and K1100RS represent the first generation of BMW's K-series motorcycles, produced circa 1989-1996. These models are powered by a 1100cc inline four-cylinder engine, known for its smooth power delivery and refined engineering. The K1100LT variant offered enhanced touring capabilities with extensive fairing and luggage, while the K1100RS provided sportier ergonomics for a dynamic riding experience. Both models feature a 5-speed manual gearbox and shaft drive, contributing to their reputation for reliability and comfortable long-distance travel, building upon the legacy of the K100 series. This comprehensive service and repair manual provides in-depth information for the BMW K1100LT and K1100RS. It covers all essential systems, including detailed engine overhaul procedures, fuel and cooling systems, transmission, brakes, steering, electrical equipment, and chassis components. The manual includes regular maintenance schedules, troubleshooting guides for common issues, and step-by-step repair instructions with abundant illustrations. This resource is designed to assist owners and professional technicians in maintaining, diagnosing, and repairing these motorcycles, ensuring optimal performance and longevity.