... 250cc 6.00-13 rear tire motor tricycle cargo Engine Configurationitem number: HY250ZH-2D engine type Zongshen engine single cylinder,4-stroke,water ... fuel consumption ≤354 Low idling speed 1500±150 exhaust pollution CO≤3.8%,HC≤800ppm starting ability ≤15s clutch type Wet ... from us,from chongqing?1,Chongqing is motorcycle base, the quality is the best in china. So never compare our tricycle with it ...