Compared to the British and American models that then dominated the market, it had better performance and reliability, was better equipped, and yet was much cheaper. History Ī defining example of the type, the Honda CB750, was introduced in 1969 with an engine based on technology Honda had developed in Grand Prix racing. ![]() Subsequently, in the 1980s and 1990s, the Japanese manufacturers diversified their ranges, producing faired sportsbikes, race-replicas, dual-sport bikes and musclebikes. This design became known as the Universal Japanese Motorcycle, or UJM." Their ideas soon came together in a rock-solid package. "throughout the 1970s, the Japanese companies experimented with different types of engines and frame designs. In the 2010 book, Sport Bikes, Hans Hetrick wrote that: conceived in sameness, executed with precision, and produced by the thousands." There is developing, after all, a kind of Universal Japanese Motorcycle. "In the hard world of commerce, achievers get imitated and the imitators get imitated. In 1976, Cycle described the new phenomenon, saying: Such machines had massive sales, and UJMs continued to be produced for more than a decade. ![]() UJMs included such prominent models as the Honda CB500, the Kawasaki Z1, and the Suzuki GS750. As the major Japanese motorcycle manufacturers, Honda, Kawasaki, Suzuki, and Yamaha, began replicating each other's designs, the UJM's created a homogeneity of form, function and quality. The UJM template featured a four-cylinder engine, standard riding position, carburetor for each cylinder, unit construction engine, disc front brake, conventional tubular cradle frame and telescopic front forks and twin-shock rear suspension. In 2011, the New York Times said lightning struck for Honda "with the 1969 CB 750, whose use of an inline 4-cylinder engine came to define the Universal Japanese Motorcycle." The CB750 became a rough template for subsequent designs from all three of the other major Japanese motorcycle manufacturers. The term " Universal Japanese Motorcycle", or UJM, was coined in the mid-1970s by Cycle Magazine to describe a proliferation of similar Japanese standard motorcycles that became commonplace following Honda's 1969 introduction of its successful CB750. UJMs were available in various displacements, and their ubiquity helped grow motorcycling in America during the 1970s and ‘80s. The simple design made motorcycling accessible to riders of all types and skill sets. ![]() The basic platform was an upright, open seating position motorcycle powered by a carbureted, air-cooled engine wrapped in a steel-tube cradle-type frame, and at least one disc brake to bring it all to a stop.
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