The 18-year-old, fondly known by his fans as 'Super KIP', claimed his second win of the season at the main expense of Italians Andrea Locatelli and Enea Bastianini.
Khairul Idham's previous success was also attained in the rain in Argentina, and when heavy rains began to descend, the young Malaysian must surely have been grinning widely behind his helmet visor.
The impact of the wet race didn't take long.
Super KIP moved from way back on the grid all the way to seventh by the end of the very first lap.
Riding as if his life depended on it, the teen sensation ran off the track on the 14th lap but yet did not ease off the pace even a bit, instead, he pressed on even harder.
Praise pours in for Super KIP on social media
Khairul Idham is now 10th in the Moto3 standings, 105 points behind South African leader Brad Binder, only eighth in Germany.
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PHOTO ALBUM: Super KIP pulls off shock win in Argentina
Race Result
1. Khairul Idham Pawi (MAL/Honda) 47min 07.763sec, 2. Andrea Locatelli (ITA/KTM) at 11.131s, 3. Enea Bastianini (ITA/Honda) 13.359, 4. Jakub Kornfeil (CZE/Honda) 18.541, 5. Fabio Di Giannantonio (ITA/Honda) 20.620, 6. John McPhee (GBR/Peugeot) 20.698, 7. Jorge Navarro (ESP/Honda) 20.910, 8. Brad Binder (RSA/KTM) 23.333, 9. Jules Danilo (FRA/Honda) 30.318, 10. Francesco Bagnaia (ITA/Mahindra) 31.095
Moto3 World Championship
1. Brad Binder (RSA/KTM) 159 pts, 2. Jorge Navarro (ESP/Honda) 112, 3. Romano Fenati (ITA/KTM) 93, 4. Francesco Bagnaia (ITA/Mahindra) 85, 5. Nicolo Bulega (ITA/KTM) 75, 6. Enea Bastianini (ITA/Honda) 65, 7. Niccolo Antonelli (ITA/Honda) 63, 8. Fabio Di Giannantonio (ITA/Honda) 58, 9. Jakub Kornfeil (CZE/Honda) 58, 10. Khairul Idham Pawi (MAL/Honda) 54