Thoroughly than ever before the BMW cycles "two valve" Boxer motor will be presented here. This series debuted in late 1969 with the / 5 models. A long history of success began and ended after more than a quarter of a million bikes built until 1996 with the R 80 GS Basic.
In this first volume, all models are presented with two spring legs. These are the machines of the series / 5/6/7 Then there are the models of R 45, R 65, R 65 LS and finally the R 80 RT R 100 CS, T R 100, R 100 and R 100 RT RS, which were built until 1985.
Not only did all the production models and prototypes have never been shown to be described in detail, even the fathers of these machines have their say. All frame and engine numbers, visible and invisible changes of detail, built numbers, tips for buying used, to identify and complete restoration of the classics to the present volume, mature machines
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