Need to win $100 if I can figure out where "B-620" comes from by tomorrow!

StageLeft

No Lifer
Sep 29, 2000
70,150
5
0
My brother said his new MSN name will be B-620 and he'll gimme $100 if I can figure out where it comes from by tomorrow.

Possible hints could be lyrics/song name from music.
He also is into mountain biking so it may be something to do with that.

Has anyone seen "B-620" anywhere...?

It is not the wilsons B-620 tennis racket or the Getac B-620 notebook...I think its something a bit more subtle.