This video will show you the build process of our ProBld 232cc four valve 30 horse power hybrid GY6 engine. This is a wild motor! It has a 4 Valve Yamaha Zuma cylinder head, and a GY6 bottom end cylinder, crank case and crankshaft. This engine showcases most of our top of the line ProBld parts, as well as the Revenue clutch set up. This motor will fit a modified Honda Ruckus, Vento style scooters / Vittaci Rocket and buggy scooters.Stay tuned to see how fast this GY6 will be.