This manual covers the R80 GS and R100 R models from 1979. These motorcycles are renowned for their robust air-cooled boxer twin engines, known for their torque and durability. The GS models feature long-travel suspension for off-road capability, while the R models are designed for road touring. A key engineering feature across both is the shaft drive, which simplifies maintenance compared to chain-driven systems. These bikes represent a significant era in motorcycle heritage, building on decades of experience with the boxer engine platform and offering a blend of performance and reliability for dual-purpose and touring use.

This comprehensive workshop and service manual provides essential information for the maintenance, repair, and troubleshooting of your R80 GS or R100 R. It details procedures for routine maintenance, engine overhauls, transmission service, suspension and brake repairs, and electrical system diagnostics. The manual includes specific technical specifications, torque values, clearances, and detailed wiring diagrams. It is designed to assist owners, mechanics, and technicians in keeping these iconic motorcycles in optimal working condition, covering everything from basic fluid changes to in-depth component rebuilds.