F1TECH: Racing Bulls continue aggressive development with four-part upgrade package for Belgian Grand Prix

Racing Bulls has arrived at the Belgian Grand Prix with another substantial upgrade package for the VCARB 03, continuing one of the most aggressive development programmes on the 2026 Formula One grid.

The Faenza-based squad has introduced four aerodynamic updates for the Spa-Francorchamps weekend, featuring revised sidepods and engine cover, a narrower roll hoop inlet, updated front brake drums and a redesigned rear wing assembly aimed at improving aerodynamic efficiency.

The most prominent changes appear around the sidepods and upper bodywork, where Racing Bulls has reshaped the bodywork to improve airflow towards the rear of the car.

According to the team's technical submission, the revised profile offers better control of the airflow travelling along the car's flanks.

"The profile of the sidepods has been modified to provide better control of the airflow passing around the side of the car."

By delivering cleaner airflow downstream, the update is expected to improve the effectiveness of the rear bodywork and aerodynamic surfaces.

The team has also introduced a revised roll hoop inlet featuring a narrower profile. Although subtle, the change is designed to improve the quality of the airflow feeding the rear of the car.

"A narrower roll hoop has been introduced, which improves the flow quality reaching the back of the car and on to the rear wing."

Improved airflow in this region can enhance the efficiency of the rear wing while making the car's aerodynamic behaviour more consistent across different speeds and yaw angles.

At the front of the VCARB 03, Racing Bulls has updated the brake drum assembly with a series of detail changes aimed at improving airflow management around the front wheels.

"Detail changes on the front brake drum components bring improvements in air flow management at the front of the car."

Although relatively minor, such refinements can help reduce turbulence generated by the rotating wheels, contributing to cleaner airflow along the length of the car.

Completing the package is a new upper rear wing assembly incorporating revised mainplane and flap profiles. Rather than simply increasing downforce, Racing Bulls has focused on improving the aerodynamic efficiency of the rear wing.

"A number of changes to the mainplane and flap profiles allow the rear wing to generate downforce more efficiently, bringing performance improvement at Spa and other circuits."

The development has been designed not only for the low-drag demands of Spa-Francorchamps but also with broader applicability across future races, suggesting it will remain part of the car's aerodynamic package beyond the Belgian Grand Prix.