Isamu Kasuya (粕谷勇, Kasuya Isamu) is a Japanese former professional Grand Prix motorcycle road racer. Kasuya began his Grand Prix career in 1963. He had his best season in 1964 when he finished the season in seventh place in the 250cc world championship, and eighth place in the 350cc world championship.
Source: “Isamu Kasuya”, English Wikipedia (CC BY-SA 4.0), excerpt
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