[5] Geboers was born in Neerpelt, Belgium where his father owned a petrol station and also sold automobiles as well as mopeds and scooters.

[6][7] He went on to win two more Grand Prix races in Germany and Czechoslovakia to finish the season ranked third in the championship behind Harry Everts and Michele Rinaldi.

[18][19] Whitlock convinced Geboers to compete in the 250cc world championship in 1987, with the promise that he could return to the 500cc class if he won the 250cc title.

[6] Geboers won five Grand Prix races to win the 1987 250cc world championship, earning a return to the premier 500cc division.

[6][20] Aged 28 years, Geboers retired at the top of his sport in 1990 by winning the premier 500cc world championship in his final season of competition.

Geboers managed the Suzuki motocross team along with his brother, fielding Belgian riders Clement Desalle and Kevin Strijbos.

Geboers died on May 6, 2018, in a drowning accident on a lake in Mol, Belgium after jumping off a boat to save his pet dog.