Malossi 190cc Big bore kit for Vespa LX150 - ScooterSwapShop
Vespa/Piaggio 70cc Cylinder Kit
Joeyschaar
47mm 70cc Racing Cylinder Kit & Head For Vespa 50 S Lx Lxv Primavera College Sprint 50cc Ac 2 Stroke Scooter Engine - Engines Big Bore & Top End Kits - AliExpress