In terms of biker enjoyed songs you can do a lot worse than Steve Earle.

Copperhead Road, Justice in Ontario (just be aware of what backpatch clubs are there before you roll that one out!), This Highways Mine (Roadmaster).

One that I play at biker type places and that always goes down well is in the link. Just get a bit of hush by telling them what it is! Great song about a dispatch rider in WWII. I asked the poster for permission to use it and he was most accommodating.

https://www.youtube.com/watch?v=X67BUy7c5Jk