It was just four years since the finish of the second World War when the FIM launched the World Championship. The six round Championship was held only on European circuits and consisted of four solo classes 125, 250, 350 and 500cc plus sidecars. The other tracks selected were Berne in Switzerland, Assen in Holland, Spa Francorchamps in Belgium, Clady in Ulster Northern Ireland and Monza in Italy.

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