This manual covers the R1150RT, a motorcycle produced approximately from 2001 to 2006, representing the second generation of the R1150 series. Building on a legacy of producing high-quality touring motorcycles, the R1150RT is renowned for its comfortable ride, excellent long-distance capabilities, and robust engineering. It features an air/oil-cooled, four-stroke, flat-twin Boxer engine with 1130 cc displacement, producing approximately 85 hp and 72 lb-ft of torque, mated to a 6-speed manual gearbox. Key technological and safety features include the integrated ABS II (or EVO) system and a shaft drive via the Paralever system. The R1150RT is recognized for its advanced design and rider-focused amenities, making it a favored choice for extensive travel. This comprehensive Factory Service and Repair Manual provides detailed, step-by-step instructions for the maintenance, repair, and overhaul of the R1150RT. Its scope encompasses all major systems, including the engine, fuel injection, transmission, brakes, suspension, and electrical components, offering factory-level detail suitable for professional technicians and advanced enthusiasts. The manual includes procedures for routine maintenance, component disassembly and reassembly, troubleshooting, and essential technical specifications such as torquing values and fluid types. By equipping owners and mechanics with this in-depth information, the manual empowers them to perform necessary service, ensuring the optimal performance, reliability, and longevity of the R1150RT, while also facilitating cost savings on labor.