what makes you believe you have any right to place a lien on the bike? Just because you stored it does not mean you have any claim on it. In fact, most likely, you have absolutely zero claim so as to be able to place a lien on the thing. Even then, that does not mean you can just keep it.
On top of that, the bank can still come and get it because they do have a legal lien on it.
Sounds like a lawn ornament to me.

