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1970 DX250

Collection items

(1970 / Production Model)


This model was the 250cc version of the sport model RX350 released in April of the same year. Its newly designed 2-cylinder engine featured a 5-port layout, "Autolube" oil supply system and twin carburetors, and was mounted on a double cradle type frame made of high-tensile steel as on Yamaha’s production racers. The un-sprung components included a Ceriani type front fork with an aluminum bottom case, a 3-way adjustable rear cushioning unit and completely dust- and water-proof drum brakes. It achieved light and agile handling that set a new standard for sport bikes of the time.

  • Overall length × width × height: 2,040mm × 835mm × 1,085mm
  • Weight: 138kg
  • Engine type: Air-cooled, 2-stroke, in-line 2-cylinder, 247cm³
  • Maximum power output: 22.0kW (30.0PS) / 7,500r/min
  • Maximum torque: 28.6N・m (2.92kgf・m) / 7,000r/min
  • Price: ¥196,000

*All figures, etc. in a model's description or specifications are from when the model was originally released.


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