Overview

• Only Red Bull, Alpine and Sauber arrived at Zandvoort with updates, while McLaren, Ferrari, Mercedes and others brought none.
• Red Bull added longer-chord flaps to the RB21 front wing to increase load for Zandvoort’s high-downforce demands, as detailed on the FIA upgrade sheet.
• The revised Red Bull wing ran only on Yuki Tsunoda’s car in Friday practice, with Max Verstappen using the existing specification.
• Alpine reprofiled rear brake-duct furniture to clean up rear-wheel wake, and Sauber updated a rear brake-duct vane to influence diffuser flow and rear balance.
• Teams cite the summer shutdown, cost-cap constraints and the 2026 rules transition for the slowdown, with Haas indicating a larger package may arrive later this season.