I know the states vary wildly on these things but here is what I found in IL: Bonded title is accomplished by putting up a surety bond or cash bond in the amount of the current value of the bike. The bonded title stays intact for a given period (2 years hear in IL if I remember correctly) during which any claims on the title are heard. At the end of the 2-year period, presuming no claims on the title have come forward, the title is eligible to be converted to a standard title with the bond expiring or, in the case of a cash bond, the cash is returned.
I did not get any further than that as I decided against the bike I was looking at. The DMV gave me a packet of information on the process which I now cannot find.
What I would want to find out is how the bond works in a transfer of ownership. I would assume a cash bond - if applicable - would transfer to the new owner; meaning it would be returned to the new owner when the 2 years expires. You certainly want to determine that relative to the present/future cost/value of the bike.
Let us all know what happens. Good luck.