Chantra impressed for much of the season despite missing three dates due to injury and scored 23 points with a 9th place best result at his home GP. Despite raised expectations, in 2020 the results were not as expected. He only managed to collect 10 points throughout the season and finished 25th place in the standings. There were improvements the following year, with a fifth place finish at the Austrian GP the highlight of the year. 2022 proved a big year for Chantra, as he stunned in the Mandalika rain to claim Thailand’s first ever Grand Prix win, which he followed up two weeks later with a second place in Argentina, and then two further podiums followed in a breakout campaign. In 2023, the Thai rider would further elevate his performance, culminating in a triumphant victory at the Japanese Grand Prix. Concluding the season in sixth place, he achieved his most impressive overall result thus far.