<page_title> 1998 Grand Prix motorcycle racing season </page_title> <table> <cell> 1998 World Champions 500cc – Mick Doohan (Honda) 250cc – Loris Capirossi (Aprilia) 125cc – Kazuto Sakata (Aprilia) </cell> </table>
At the Grand Prix motorcycle racing season in 1998, Kazuto Sakata won 125 title for Aprilia.