George Russell also set the fastest time in the second free practice session for the Grand Prix of Sakhir on Friday.
The Briton, who replaces Lewis Hamilton infected with the corona virus at Mercedes, kept number two Max Verstappen behind him, among others.
Earlier in the day, Russell was already the fastest in the first free practice and Verstappen also set the second time.
In the second free practice, Russell was slower (54.713 to 54.546), although that also has to do with the circumstances.
It had cooled off during the second free practice, which was held in the evenings in Bahrain.
It is also evening in Bahrain during Sunday's race.
Verstappen was more than a tenth slower than Russell in 54.841, after clocking 54.722 in the first practice.
Sergio Perez (54,866) completed the top three, followed by Esteban Ocon (54,940) and Alexander Albon (55,036).
For Charles Leclerc, the second free practice only lasted two laps because he had problems with his gearbox.
His Ferrari teammate Sebastian Vettel will also be dissatisfied.
The four-time world champion spun several times and did not get past the sixteenth time (55,830).
Valtteri Bottas also disappointed with the eleventh fastest time (55.321).
The Mercedes Finn did record a very fast lap, but that time was declared invalid due to exceeding the track limits.
Results second free practice GP Sakhir
1. George Russell - 54,713
2. Max Verstappen - 54,841
3. Sergio Perez - 54,866
4. Esteban Ocon - 54.940
5. Alexander Albon - 55.036
6. Daniil Kvyat - 55.068
7. Lance Stroll - 55.104
8. Daniel Ricciardo - 55,124
Pierre Gasly - 55,133
10. Carlos Sainz - 55,258
11. Valtteri Bottas - 55,321
Sebastian Vettel - 55,830
20. Charles Leclerc -
Circuit has been shortened considerably
The drivers will drive at the Bahrain International Circuit in Bahrain, just like last week, but for the Grand Prix of Sakhir the track has been shortened considerably.
The drivers cover 2 kilometers less and for the second time in Formula 1 history they take less than a minute to complete a lap.
Romain Grosjean will not be there this weekend either.
The Frenchman van Haas survived a terrifying crash last week.
He is replaced by Pietro Fittipaldi, who finished nineteenth in the first practice and eighteenth in the second.
The Sakhir Grand Prix continues on Saturday with the third free practice (4 p.m. Dutch time) and qualifying (6 p.m.) on Saturday and the race (6:10 p.m.) on Sunday.