Rolf Tibblin overtook early championship points leader, Jeff Smith, to claim his second consecutive 500cc motocross world championship with his countryman, Sten Lundin taking second place.

Tibblin took five Grand Prix victories riding for the Husqvarna factory racing team.

[1][2] A significant moment in motocross history occurred when ČZ factory rider Vlastimil Valek rode a 263cc two-stroke motorcycle to win the first moto of the 500cc Czechoslovakian Grand Prix.

[3] Tibblin's Husqvarna teammate Torsten Hallman also claimed his second consecutive 250cc motocross world championship in dominating fashion by winning 8 of the 14 Grand Prix races.

The ČZ factory continued to refine and improve their motorcycles with riders Vlastimil Valek, Igor Grigoriev and Karel Pilar finishing second, third and fourth in the 250cc class final points standings.