Bezzecchi, who had already won the season's opening GP in Thailand three weeks ago, repeated the feat by finishing ahead of his Spanish team-mate Jorge Martin and Italian Fabio Di Giannantonio of Ducati, who had started from pole position.

Spanish reigning world champion Marc Marquez of Ducati, who had won Saturday's sprint race on the Brazilian circuit, had to settle for fourth place.

His compatriot Pedro Acosta (KTM), who had arrived in Brazil at the top of the championship standings, lost his lead to Bezzecchi after finishing seventh on Sunday.

The race was shortened from 31 to 23 laps due to the extreme heat, which was causing severe tyre degradation and raising safety concerns for the riders.