thats actually what i was thinking too.Looks like the clip on the end of the bolt which holds the rearset pegs on.
482 in the link.
OEM Parts Kawasaki Ninja ZX-6R (ZX636-B2) 2004 FOOTRESTS - Cheap Cycle Parts
i thought it went with the clutch but i cant remember it was my winter project.
May be used elsewhere. What did you have apart before you ended up with this piece?
:dunno: maybe....what did you take apart?