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The original YZ250 of 1974 used an air-cooled 250cc two-stroke engine of 70 mm bore and a 64 mm stroke, which was improved semi-annually. The air-cooled motor was replaced in 1982 with a 249 cc liquid-cooled two-stroke reed-valved engine with a mechanical, rather than servo-driven, YPVS exhaust valve for a wider spread of power. Although other ...
The YZ250F has been praised for combining the broad-power characteristics of a four-stroke engine with the light handling more common in smaller, 125 cc two-stroke motorcycles. [ 2 ] Despite the similar name to the YZ250 , very few parts have been shared between the models through their history.
YDS-3 (1964) 246 cc, two-stroke, parallel-twin, it used the world's first oil injection lubrication system in a 2-stroke engine. [2] DT-1 (1968) Yamaha's first true off-road motorcycle. [1] XS-1 (1970) Yamaha's first four-stroke engine motorcycle (650 cc twin). [3] YZ Monocross (1975) First production motocross bike with a single rear shock. [3 ...
2 External links. Toggle the table of contents ... two-stroke liquid-cooled 249 cc (15.2 cu in) 60°-90° V-twin: Power: 75–80 hp (56–60 kW) [4] Transmission: 6 ...
The 15 best subscription gifts of 2024. Show comments. Advertisement. Search Recipes. Steak with Tomato Gorgonzola Sauce. Asian Chicken Salad Sandwiches. Stampede Shrimp-Stuffed Poblanos.
These dogs are truly deserving of a little fun in their lives. As the rescue themselves noted, many of the dogs are in hospice care with cancer, renal failure, or other serious health issues. So ...
Donald Trump’s siding with Elon Musk over visas for high-tech workers is the most significant example yet of the president-elect favoring powerful elements in his new MAGA coalition over his ...
The YD-1 of 1957 was a 250cc two-stroke twin cylinder motorcycle, resembling the YA-2, but with a larger and more powerful motor. A performance version of this bike, the YDS-1 housed the 250cc two-stroke twin in a double downtube cradle frame and offered the first five-speed transmission in a Japanese motorcycle. [10]