Top Quality Bicycle Engine Kit, Gas Bike Convertion Kit 1) low ... it is 2-stroke bicycle engine kitTop Quality Bicycle Engine Kit, Gas Bike Convertion Kit Specifications Bicycle Motor Kit, Motorized ... Bike Gas Engine, 2 stroke, 48cc/55cc/60cc/80ccModel No. 1E40F, 1E45F, 1E47F1. Engine type ... 2 L, 2.5L, 4L Top Quality Bicycle Engine Kit, Gas Bike Convertion Kit