Motocross Racing World Championship season.
Suzuki's Roger De Coster claimed his fifth 500cc world championship finishing ahead of his teammate Gerrit Wolsink and Maico's Adolf Weil.
Wolsink had seven moto victories against the nine victories by De Coster meaning that the championship wasn't decided until the final race in Luxembourg.
Husqvarna's Heikki Mikkola returned to the 250cc class and won a tight points battle to finish the season one point ahead of KTM's Gennady Moiseyev.
Gaston Rahier once again dominated the 125cc class to win his second consecutive world championship for Suzuki.