All new 49cc 1.4kw Whopper Stopper 4 cycle bike engine kit. Converts a standard bike into a smooth operational Moped in just a few hours... > Less vibration than a 2 cycle engine.... > No exhaust smoke, EPA approved engine... > No oil mixing with gas... > Complete kit ready to install..... > Shipped direct from China factory to WD wholesale distributors only. Write for details and volume pricing. >>> Submit your company profile and location with first inquiry for fast responce.