What Bands did the Easy Rider?

"The Weight" (see http://en.wikipedia.org/wiki/Easy_Rider_(soundtrack)#Track_listing)

a film

The music at that plays over the titles of the movie is Born To Be Wild by Steppenwolf and the song that plays over the credits is Ballad Of Easy Rider by Roger McGuinn.

Originally rated R

There were four motorcycles altogether (some used as backups). Three of them were stolen. The only one that survived the filming was the one they trashed at the end of the film. It was reassembled by...