UIM F4

The UIM Council has officially adopted a trio of safety upgrades for F4, confirming mandatory crash boxes, rear-mounted balloon airbags, and a minimum weight increase from 1 January 2026.

The decision, made during the 98th UIM General Assembly on Friday 10 October, marks a major evolution in cockpit protection standards.

F4 crash boxes will become mandatory for all boats built after 1st January 2026 under proposals facing a UIM Council vote tomorrow, with detailed homologation specifications demanding multi-layer foam construction capable of absorbing 1.

2 kilojoules during drop tests to reduce driver injuries in lateral collisions.

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The 11th Waterfestival at Viverone Lake delivered a thrilling GT30 qualifying session, with Italy’s rookie driver Mattia Andreani storming to pole position for the UIM European Championship 2025.

Andreani set the pace with a blistering 1’17.

British powerboat racer Ben Morse, from Lowestoft, is preparing for a decisive weekend in Viverone, Italy, as the 2025 UIM F4 World Championship reaches its finale.

At 31, Morse arrives determined to put a difficult season behind him.

The 2025 UIM F4 World Championship will reach its dramatic conclusion this weekend in Viverone, as seventeen of the world’s finest F4 drivers descend on the picturesque shores of Lake Viverone in northern Italy for the final two rounds of the season.

With 40 championship points still available, the tension is palpable.

The 2025 UIM F4 World Championship roared into life on 23–24 August with its opening rounds at the Grand Large circuit in Mons, Belgium.

The “Mons Water Grand Prix” served up fast straights, tight corners and plenty of drama across two days of racing, giving fans a taste of what promises to be an enthralling season.