Red Bull reveal bizarre issue with spec part as Supercars launch investigation

1. Red Bull reveal bizarre issue with spec part as Supercars launch investigation

Red Bull Ampol Racing has uncovered an unusual technical problem affecting one of its Supercars entries, prompting the championship organisers to begin an investigation into how the issue went unnoticed for much of the 2026 season. The discovery concerns the No. 888 Ford Mustang driven by 2024 champion Will Brown, which has struggled to match expectations this year.

The problem centres on the engine airflow restrictor, a controlled component supplied by Supercars and intended to be identical across the relevant Ford Mustang entries. According to Triple Eight Race Engineering, the restrictor fitted to Brown’s car was one millimetre smaller than the specification required.

Although that difference may sound minor, the component has an important role because it regulates the amount of air entering the engine. A smaller restrictor can therefore reduce the engine’s available power, potentially affecting acceleration, straight-line speed and overall lap performance.

Team principal Jamie Whincup said the issue was discovered while the team was investigating why Brown’s car had been unable to consistently fight at the front of the field. The team had committed to examining every possible explanation following disappointing results, eventually uncovering the discrepancy during preparations for the upcoming event at Queensland Raceway.

The discovery offers a possible explanation for some of Brown’s difficulties. After 25 races, he was sitting seventh in the championship, while his teammate Broc Feeney had enjoyed a much stronger campaign in the sister No. 88 car. Feeney had collected five victories and occupied second place in the standings, highlighting the difference between the two cars.

Triple Eight stressed that the airflow restrictor was not manufactured by the team. Instead, it was a supplied component that was expected to remain within a common specification. The team nevertheless accepted responsibility for failing to identify the problem earlier and apologised to everyone affected.

Supercars has confirmed that the restrictor was originally loaned to Triple Eight for demonstration purposes during the team’s launch in February. It subsequently remained installed on Brown’s car and was used through the Perth Super 440 before the discrepancy was finally identified.

The governing body also acknowledged that its routine technical checks had not selected the particular restrictor for inspection before the Perth event. Supercars conducts random compliance checks throughout the season, examining different components and systems across the field.

The organisation has now begun reviewing the circumstances surrounding the mistake and is expected to examine whether its technical and operational procedures need to be strengthened.

For Brown and Triple Eight, the immediate priority will be discovering how much performance was lost and determining what the car can achieve with the correct component. The team is also preparing a new chassis for the Queensland Raceway event.

The situation has created an extraordinary twist in Brown’s season. What initially appeared to be a simple performance deficit may have been partly connected to a specification problem that remained hidden for months. With the correct airflow restrictor now in place, the upcoming races should provide a clearer indication of the No. 888 Mustang’s true pace.