Remy Gardner won the world championship in the final race at Valencia.
All teams used series-specified Dunlop tyres and Triumph 765cc 3-cylinder engines.
[17] The following Grands Prix took place in 2021:[29][30][31] Points were awarded to the top fifteen finishers.
Each constructor received the same number of points as their best placed rider in each race.
The teams' standings were based on results obtained by regular and substitute riders; wild-card entries were ineligible.