<page_title> List of Grand Prix motorcycle racing World Champions by year </page_title> <section_title> List </section_title> <table> <cell> 1978 <col_header> Year </col_header> <col_header> 1977 </col_header> </cell> <cell> South Africa Kork Ballington (Kawasaki) <col_header> 350cc </col_header> <row_header> 1978 </row_header> </cell> <cell> South Africa Kork Ballington (Kawasaki) <col_header> 250cc </col_header> <row_header> 1978 </row_header> </cell> </table>
In the 250 and 350 classes, Ballington on his Kawasakis in 1978, capturing world championships.