Chain drive, manual/ semi clutch, 50cc/70cc/90cc/110cc engine all available. Seat high: 68cm All changes are below: 1. aluminium frame 2. aluminium singal swing arm. 3. aluminium anodize rim. 4. aluminium new style muffler. 5. aluminium brake pedal. 6. aluminium hand bar. 7. aluminium tank cap. 8. Up side down forks. 9. new updated rear center absorber with air cell. 10. front and rear disk brake. 11. chain tensioner,roller. 12. new style air filter. 13. new fashion plastic cover.