Red Bull's chief technical officer Adrian Newey had been working "night and day" on an update set to debut at the Spanish Grand Prix next month, according to team boss Christian Horner.
Red Bull entered the 2017 season with expectations of returning to the front of the grid under Formula One's new aero-led technical regulations, but so far has struggled to match championship leaders Ferrari and Mercedes. Although the car's Renault power unit is not yet a match for Mercedes and Ferrari, Red Bull has made no secret of the struggles it has had with its chassis and aero package and is targeting a major overhaul in time for the next round in Spain.