GY6 engine features, 1, High quality, long service life 2, Low noise, easy start, good performance 3, Low fuel comsumption GY6-50/60/70/80/100 engine4 stroke, air cool engine, fit for all chinese GY6-50/60/70/80/100 scooter models, high quality and long service life, low noise low fuel comsumption, easy start and control, good racing performance. GY6-50/60/70/80/100, 4 stroke engine