This manual deals with the engine, clutch, gearbox and universal drive for the following BMW models from produced from 1993: The classical sporty touring bikes: R 1100 RS, R 1150 RS. The cruising enduros: R 850 GS, R 1100 GS, R 1150 GS, R 1150 GS Adventure. The touring boxers: R 1100 RT, R 1150 RT. The classical roadstars: R 850 R, R 1100 R, R 1150 R. The cruisers: R 850 Cruiser, R 1200 Cruiser, R 1200 CL. The sporty boxers: R 1100 S, R 1100 S BoxerCup Replica. Fresh and naked: R 1150 Rockster. In this special edition of the motorcycle repair manual details are provided on maintenance, care, disassembling, gauging and assembling the engine, clutch, gearbox and universal drive of BMW's 4-valve boxer engines. This special edition supplements all motorcycle repair manuals dealing with BMW 4-valve boxers. People interested in the technical side can read all about the engine electrics, and are provided with maintenance data, information on how to make special tools themselves and tips. 192 pages, completely black and white.