It used to be unusual to see Formula 1 teams introducing new parts when travelling from one flyaway grand prix to the next.
But despite there ostensibly being little chance to produce upgrades in the fortnight between Australia and Bahrain, some teams had long planned to give development parts their debuts for the Sakhir race, so there was no shortage of new sights in the pitlane during practice.
It also helps that Sakhir has some of the same demands on the cars' set-up as Melbourne. The track rewards a strong front end, but the longer straight requires power and in addition also tests the drivetrain and cooling systems.