What kind of engine does Yamaha Mu Feng 125-28 motorcycle belong to? (For example, chain machines, ...)

With fairing and starting lever, banner wheel, the dealer doesn't bargain, 7500, I don't know how much it can cost. There is also a round lamp with ABS, regardless of the price. The fuel consumption of the deluxe 8200 is kept at 1.8 ~ 1.9 liters/100 kilometers. There is no difference in essence, the difference lies in the change of appearance and color. YBR 125 Tian Jian is a motorcycle model produced by Chongqing Construction Yamaha Motorcycle Co., Ltd., which is located in Chongqing along the Yangtze River and is one of Yamaha's production bases in China. At the Guangzhou Motorcycle Exhibition in 2002, YBR 125 Tian Jian caused a sensation as soon as it appeared. Since 2003, it has been sold all over China. This model is a light sport vehicle, which adopts a sturdy air-cooled 4-stroke SOHC single cylinder 123cm3 engine and is mounted on a high-rigidity metal diamond bracket. "YBR 125 Tian Jian" has made the city streets light and comfortable, simple and economical to operate, and advocated the new standard of 125CC. More than 200 thousand sets have been sold in China, and the number of users is still increasing. The development is based on "125cc model with highly balanced comprehensive performance that adapts to the traffic environment in China". When designing, we will not forget the latest technology, and integrate the technical experience and aerodynamic characteristics accumulated through the competition to create a "beautiful horse" that leads the new generation 125cc models. Quote Baidu