Drive Sprocket Nut, Striped :(

[BBS360]

Yeah, the store doesn't advertise them as for the xs400. Took some cross-referencing to find them.
I did a bit of a write-up on them here: http://www.xs400.com/threads/finally-picked-up-an-xs400.15559/#post-159553

 

[dgoodsy]

Awesome, thanks!

 

[arfstrom]

Got everything in place, It started up just fine, and had nothing out of the ordinary, so its Good!