The best way to obtain legal title of the desired dirt bike where registered title is being held by a collection company due to presumed non-payment by the person who signed the loan is to have a written agreement written up to be signed by you, the collection company holding registered title to the dirt bike and the owner in possession as to terms of the purchase by you and transfer of legal registered title to you upon payment in full.You shouldprobably consult with a business attorney to have a properly drawn up contract created for this transaction where all documents and monies would be placed with a third party escrow to make sure the transaction is completed as agreed. By having a third party escrow handle the transfer of money and registered title to you, you do not have to worry about never getting the registered title to the motorcycle.Once you obtain registered title to the motorcycle, you need to send it to your state's motor vehicle department keeping a copy of it. You should also place insurance on the motorcyle as well right away once you own it.Good question.