Four generations of RD (also known as the RZ250 in the Japanese and Australian markets) were produced: the air-cooled models from 1973 up to 1979, and from 1980 until 1987 the liquid cooled models; known as the RD250LC, RD250LC-II and RD250 YPVS.

The standard bike weighed 152 kg dry and had a 247cc 2-stroke twin engine that produced 30 hp.

[1] It had a 6 speed gearbox, but on the first version 6th was disabled, but could be reinstated by removing a blanking plate on the gear selector drum.

At the time, it was considered that the reason for the sudden change in the law was the RD250 which put a high-speed vehicle into the hands of inexperienced users.

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