The 39-year-old Slovakian completed the course in 1min 26.27sec, buoyed by a brilliant middle section, and that was enough to beat Božič by 0.17.

Božič was left to rue a two-second penalty on gate six, when his paddle clipped the gate.

A second Slovenian, Benjamin Savšek, was third, 0.56sec behind Slafkovský.

Mallory Franklin of Britain won the women's C1 race, a day after coming second in the K1.

Franklin completed the course in 1:35.52, making the most of the absence of Jessica Fox after she failed to qualify for the final.

Australia's Fox beat Franklin in yesterday's K1 final, as well as the C1 final at last year's Tokyo 2020 Olympic Games.

Evy Leibfarth from the United States was second, 1.75sec behind Franklin, and Germany's Elena Lilik was 4.99 off the leader in third place.

Kimberley Woods from Britain won the women's extreme final, with Corinna Kuhnle second and the Austrian Viktoria Wolffhardt third.

Swede Isak Öhrström won the men's race, ahead of Czech Vít Přindiš and France's Anatole Delassus.

Neither Woods or Öhrström had recorded a World Cup victory before.

Extreme kayak, where athletes race directly against one another, is due to make its Olympic debut at Paris 2024.

After the World Cup in Ljubljana, the next major slalom event on the International Canoe Federation calendar is the Canoe Slalom World Championships, due to take place in Augsburg in Germany from July 26 to 31.