World champions Serhii Yemelianov and Maryna Mazhula secured gold medals for Ukraine on the final day of the International Canoe Federation Paracanoe World Cup in Poznań.
Reigning Paralympic champion Yemelianov triumphed in the men's KL3 200 metres race in 39.526sec.
The Ukrainian finished comfortably clear of the rest of the field as Robert Oliver took silver for Britain in 40.210.
Leonid Krylov of Russia was the recipient of the bronze medal.
"For me it was very bad, a bad time, but I hope by the worlds it will be my best time,” Yemelianov said.
"I feel perfect, but I’m training towards Tokyo.”
Ukraine enjoyed further success in the women's event as Mazhula clocked 53.609 to top the KL1 200m podium.
Italy’s Eleonora De Paolis was edged into silver medal position having crossed the line in 53.781, with Chile’s Katherine Wollermann third.
Scott Martlew of New Zealand continued his rapid rise in the sport with victory in the men's KL2 200m.
Martlew, eighth at the 2016 Paralympic Games in Rio de Janeiro, completed the course in 41.127 to beat Italy's Federico Mancarella and Austria's Markus Swoboda.
Mancarella and Swoboda finished in an identical time, with the Italian judged to have crossed ahead of his Austrian challenger to secure silver.