A properly functioning scooter ignition coil is a must-have to get your scooter working. An ignition coil for scooters does the same necessary job of turning a 12 volt battery charge into enough electrical energy to start the scooter engone. Scooter Parts Catalog carries scooter ignition coils for street-legal motor scooters from 50cc to 150cc using the common GY6 4-stroke engine. Most 2 stroke gas scooters use the same scooter ignition coil.