Stephane Richelmi and Julian Leal will be Trident Racing's drivers for the non-championship GP2 event at Yas Marina next weekend.
The pair have driven for the Italian squad during the recent series tests at Jerez and Barcelona, and have now signed race deals.
Colombian driver Leal, 21, has a year of GP2 experience under his belt, having raced for Rapax this year. He failed to score a point, but did set a fastest lap at Spa.
Richelmi, meanwhile, was 26th in Formula Renault 3.5 this season and also made his GP2 debut with Trident at Monza, in place of the injured Stefano Coletti.