Vespa Et4 125 AC leader engine. Not seen many scooters here so hope I'm welcome. : r/ratbikes
Cyl Kit by Malossi
Essai Vespa 125 ET4 Leader : Un scooter petit mais craquant - Moto-Station
Tecnigas High-Performance Exhaust Tecnigas 4SCOOT Series for Piaggio Leader engine 125-200cc, LT 150cc, Vespa ET4, Liberty 125 Scooters | Scooter Parts | Racing Planet USA