80cc black bicycle engine kits 1) ISO 90001 certificate 2) 2 stroke engine 3) Speed: 38km/hour 4) Minimum order:60 sets 80cc black bicycle engine kitsMain parameter:Size ... /40, 10W/30 machine oil)Mixing ratio of fuel and engine oil16:1 for new sets, 20:1 after running 500kmSparking ... America, South America, Australia, Africa, South Asia,Canada and Russia. 80cc black bicyle engine kits