Front sprocket lock washer?
 

Took Off the front sprocket guard and found this...

Thought it looked a bit strange then realised that there is no lock washer. Has anyone else got the same as this or did a previous owner not fit one when changing the old sprocket? its a xtx 2009.

All the bikes i have had and worked on always had a lock washer but thought that i should double check before i order and fit one. Or is it a fancy lock nut?

Nope the lock washer is definately missing.

Nut looks standard issue to me.

Yeah thats what i thought. New lock washer on order, and a few other bits!!