Daiki Seiki Company (DSK), produced motorcycles in Japan from 1953 to 1961, and became known for lightweight two-stroke machines designed for everyday transportation during Japan’s postwar motorization boom. The company offered a range of small-displacement motorcycles and scooters, earning a reputation for simple engineering, affordability, and reliability. Like many independent Japanese manufacturers of the era, DSK faced increasing competition from larger brands such as Honda, Yamaha, and Suzuki, leading to the end of motorcycle production in the early 1960s. Characterized by practical design, economical operation, and limited production, DSK remains a lesser-known but representative part of Japan’s early motorcycle industry.