": I have a Mini Bike (Rupp). I'm going to make it street legal but I can't find the title. And I don't know to register it as a moped or moter cycle. My guess is moped because the engine is like a riding mower on end and has a belt to chain conection. All I know is that it will fly down the road<p>Depending on what state you live in, you may not have to register at all. Also, you can call your DMV and get registration information once you know some specifics.. For example, your bike is probably 50cc or less and is also probably automatic transmission. That means it's not a motorcycle. "