I want to build a dirt bike. does anyone know anywhere to get a whole dirt bike kit from website or store?

You don't need a engineer if you're putting a kit together.... You might need to think like one, but you def don't need one.... I have never ever seen "motorcycle kits", and believe me, I've looked... If you're going to build one, you'll need to find all the parts at junkyards, eBay, order them from the warehouse, etc. But not only do you need to have extensive knowledge in how a motorcycle works, is put together, and how to troubleshoot it. It's also, from my calculations, going to be at LEAST 5-10% more expensive then finding a good price on an older model.... Good luck.... craigslist.org

You could by any bike you can think of in pieces and put it together. There isn't a dirt bike kit. Buying a bike in parts would be about 4 times the price than the whole bike already assembled. Go buy a complete bike and get riding it sooner.