... 300cc or 400cc engine 2, Clients,quality first 250cc 6.00-13 rear tire motor tricycle cargo Engine Configurationitem ... idling speed 1500±150 exhaust pollution CO≤3.8%,HC≤800ppm starting ability ≤15s clutch type Wet Multi-Plate ... 5.00-12 wheels Rear wheels:6.00-13 rear wheel Spare wheel: 6.00-13 50*100mm keel, ... you choose us, your choise is the best. 250cc 6.00-13 rear tire motor tricycle cargo (Item No.: ...