The R1150RT is a distinguished sport-touring motorcycle, produced approximately between 1999 and 2005. Renowned for its robust build quality and the signature boxer engine, this model offers exceptional comfort and performance for long-distance journeys. Key features include innovative Telelever front and Paralever rear suspension systems, powerful air/oil-cooled 1130 cc twin-cylinder engine delivering approximately 95 hp, and an optional Integral ABS system. Its ergonomic design and substantial road presence make it a capable machine for both solo touring and two-up travel, embodying a heritage of engineering excellence and reliability. This comprehensive workshop service repair manual is designed to provide detailed guidance for the maintenance, troubleshooting, diagnostics, and repair of the R1150RT (chassis code R22). Covering a wide array of systems from the engine, fuel injection, and transmission to the complex electrical and braking systems, this manual equips owners and technicians with the necessary information. It includes procedures for routine maintenance, component overhaul, adjustments, and in-depth electrical diagnostics, ensuring the R1150RT remains in optimal condition. The manual is presented in English and is searchable and printable for practical workshop use.