Rikuo Motorcycle of the Harley-Davidson, started production in 1929. In 1931 Dabittoson Harley Motorcycle Co., Ltd. was established in Japan. Dabittoson started domestic production of the Harley-Davidson Road King Motorcycle. The 4-cycle, 1200 cc, side-valve V-twin engine produces 28 horsepower for a top speed of 97 km per hour. The Road King motorcycle was improved and produced by Lin Ritsukawa, and Tsui Meguro under the Tokyu Kogyo Kurogane Company during World War II. This included the Type 97 military motorcycle which was often produced with a sidecar, called they Harley-Davidson, through the efforts of Alfred Rich Child, shipped tooling and personnel to
Motorcycle wheel America were available with alloy wheels as an option. Italian manufacturer Fantic produce a step-through moped named 'Roma' with cast wheels as standard specification in 1975. The Yamaha RD400C sold in 1976 was the first motorcycle by a major manufacturer to be fitted with cast wheels. The cast wheels weighed more than the spoked wheels fitted to its RD350 predecessor. Honda began offering their Comstar composite wheels in 1977, marking the first time a manufacturer had included tubeless tires on a production motorcycle. At the same time as Honda's Comstar, Dawson Harmsworth firm in Sheffield, England produced a similar composite