The R1150 GS and GS Adventure models, produced between 2000 and 2005, are highly regarded dual-sport motorcycles engineered for exceptional long-distance touring and adventurous off-road exploration. These machines are celebrated for their robust build quality, the inherent stability provided by the boxer engine's low center of gravity, and their versatile ergonomics. Key features such as the reliable shaft drive, long-travel suspension, and the optional Integral ABS II system underscore their premium positioning in the adventure motorcycle market, offering a unique blend of performance and durability.

This comprehensive factory service manual provides detailed technical information and procedures essential for maintaining and repairing the R1150 GS and GS Adventure (chassis code R21). Covering approximately 600+ pages in English, it encompasses all major systems including the engine, transmission, drivetrain, fuel and ignition systems, electrical components, suspension, brakes, and chassis. The manual includes scheduled maintenance guidelines, in-depth troubleshooting guides, engine rebuild instructions, and component overhaul procedures, making it an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their vehicle.