Sem and Maurits Knopjes have both been crowned world champions at the 2025 Rotax Max Challenge Grand Finals in Bahrain. Sem clinched the world title in the DD2 category, while his father Maurits secured the championship in the E20 Masters class. It is the first time in the event’s history that a father and son claimed world titles in the same year.

A Friday full of action and plot twists at the Circuito Internazionale Napoli, host of the final round of the Rotax MAX Challenge Euro Trophy. On the track located just a few kilometers from Naples, 7 qualifying sessions and 6 heats shaped today’s program.

The Rotax MAX Challenge Winter Series opening round is well underway at Cremona Circuit, where the rain shows no signs of stopping. The first heats have been completed, setting the stage for an intense weekend of racing.