Save money 50cc to 125cc ATV & dirt bikes May fit some 250cc engines Ignition coil with spark plug wire used on 50cc-70cc-90cc-110cc-125cc and occasionally a large 250cc ATV & dirt bike engine This ATV & dirt bike part fits most Chinese made 50cc-125cc ATV & dirt bikes. Description Ignition coil with spark plug wire used on 50cc-70cc-90cc-110cc-125cc and occasionally a large 250cc ATV & dirt bike engine.This ATV & dirt bike part fits most Chinese made 50cc-125cc ATV & dirt bikes.