Red Bull Jeddah upgrades more substantial than on official FIA list

Red Bull has introduced upgrades to its difficult RB21 ahead of the Saudi Arabian Grand Prix, as it looks to course correct after a disastrous weekend in Bahrain.

The Milton Keynes squad headlines seven teams that have announced upgrades at the Jeddah Corniche Circuit, including championship leaders McLaren and struggling Ferrari.

The Italian outfit finds itself well off the leading pace in the standings after four rounds, sitting on 57 points to the constructors' champion's 151.

Red Bull is in third, on 71 points, with Mercedes in second on 93. Although, the Brackley-based team is one of the leading quartet not to bring developments to the fifth round of the season.

McLaren will run a reshaped diffuser to improve flow conditioning at the rear of the MCL39, as well as a new rear brake duct winglet arrangement on the rear corner of the car.

Red Bull, meanwhile, has enlarged the central exit of its engine cover (coke) to aid reliability and has brought a new beam wing to Jeddah.

However, the six-time constructors' champion has also ported further changes to its package which have not been disclosed on the official FIA list. Those updates are not visible, so therefore do not need to be declared by the team.

Like the aforementioned pair, Ferrari has focused on the rear of the car as well. This includes a de-cambered, shorter chord top rear wing flap to deal with the specific track requirements and an offloaded top rear wing part, which will work in conjunction with a new, single-element beam wing - both of which are carry-overs from last season's low-to-medium downforce rounds.

Further down the grid

Further down the grid, Aston Martin has introduced a track-specific rear wing flap that is less aggressive and therefore provides less load and drag.

Like Ferrari, Haas has opted for carry-overs from last campaign. The re-introduced rear wings both have reduced drag and load level.

The American team has also produced a more "relaxed", less powerful front wing flap profile for the Saudi Arabian Grand Prix.

Racing Bulls has also gone in a similar direction, with circuit-specific updates to its front, rear and beam wings, all working in tandem to reduce load and drag.

Stake has developed most heavily for the weekend in Jeddah. It has ported; a low-balance front wing flap design, changes to the central geometry of the car's floor, a new beam wing and rear wing endplate and low-drag rear wing assembly.