Buy New Roketa MC-123 150 Scooter, Eletric /kick Start at - Taoatv.com
Amazon.com: GY6 Cylinder Rebuild Kits Trkimal 47mm 80cc Big Bore Upgrade Kits for 49cc 50cc 139QMB Engines 64mm Valve scooter moped parts, GY6 Engine parts for Chinese Scooter(64mm Valve Length) : Automotive
Cylinder Head With Valve For Chinese GY6 49cc 50cc Scooter Moped 139QMB Engine | eBay
Amazon.com: Complete 70cc Racing Cylinder Big Bore Kit with 10mm Piston Pin for Yamaha JOG Zuma 2 Stroke 50cc Scooter Minarelli 1E40QMB Engine : Automotive
India's one & only twin cylinder Lambretta makes a WHOPPING 65 BHP
I built a 3-cylinder Homemade engine into a scooter frame - YouTube