Second and third secured in Sepang
The Castletown resident's results extended his lead over Chaz Davies at the top of the championship standings to 42 points.
Rea is the only rider to be on the podium in all 12 races so far this season.
His productive weekend comes off the back of signing a two-year contract extension with Kawasaki on Thursday.
Seeded riders confirmed for 2026 Supersport MGP
Farrell to lead the line in this year's class
Enduro: Ramsey prepares to host British championship rounds
Rounds five and six of series taking place on Island this weekend
Martial Arts: Taekwon-do team takes big British championships medal haul
Six competitors excel on national stage in Derby
Big turnout expected for 2026 World Downhill Skateboarding Championships
Global series back on the Island for a second year this weekend