1) 2 stroke engine 2) 48cc,60cc,70cc 3) top quality with competitive price 4) best after sale service 5) easy installation HOT SALE F50/F60/F80 BICYCLE ENGINE KITS SPECIFICATION OF BICYCLE ENGINE KIT 1TYPE OF ENGINE50 FEET START TYPE60 FEET START TYPE80 FEET START TYPE2MODEL OF ENGGINESINGLE CYLINDER AIR COOLING 2 STROKE3BORE & STROKE40MM*38MM=48CC45MM*40MM=60CC47MM*40MM=80CC4RATED POWER1.15KW/ ...