The Yamaha YSR50 is a miniature motorcycle that was produced and sold by Yamaha during the late 1980s and early 1990s. The bike featured an air-cooled 50 cc (3.1 cu in) two-stroke engine. The engine was sometimes swapped out for a larger variety. [1] Its first production year was 1986, and it was last made in 1992.

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The Yamaha YSR50 was a miniature motorcycle that was produced and sold by Yamaha during the late eighties and early nineties. The bike featured an air-cooled 50cc two-stroke engine. Its first production year was 1987, and it was last made in 1992. American Motorcyclist magazine stated its top speed was 38 mph.

2016年9月2日 · Power is supplied by the original air-cooled 50cc two-stroke single that made 7.1 horsepower at 8800 rpm when new. The bike was good for a stock top speed of just under 40 mph. After removal from storage, the seller cleaned its single Mikuni carburetor, changed the oil, replaced the original battery, and added fresh gas.

This 50cc sport model had the look of a re-shaped, scaled-down YZR500 factory racer that appealed to the spirit of race enthusiasts in a playful way. The 2-stroke single-cylinder engine had a maximum output of 7 hp and a return type 5-speed transmission, front disc brake and other features to offer full-fledged sport riding potential.

The 2-stroke single-cylinder engine had a maximum output of 7 ps for the 50cc and 8.8 ps for the 80cc, a return type 5-speed transmission, front disc brake and other features to offer full-fledged sport riding potential.

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2020年8月14日 · The original YSR engine was an air-cooled 49cc two-stroke, with reed valve induction, with five-speed gearbox and a kickstarter (how many sportbikes come with a kickstarter these days?). Supposedly, it made 7 horsepower at 8,800 rpm, and a very modest 4-ish foot-pounds of torque at 8,500 rpm.

This bike features a 50cc two- stroke engine, air-cooled with reed valve, a Mikuni VM16SH carburetor, a 5-speed constant mesh transmission, GiGi style 2-stroke expansion chamber exhaust, black rims, black swing arm, Dunlop tires, hydraulic front disc brakes for stopping power, Yamaha Monocross suspension for a smooth ride, new fiberglass body ...

Between 1987-1992 Yamaha sold a 2 stroke single cylinder 50cc street legal cafe style mini bike. It is about 1/2 the size of a full size sport bike and could attain speeds of approxiamately 55 MPH in stock form and approxiamately 70 MPH modified.