Kawasaki Part number 21007-1076
kokusan GP9325 (this might be the batch code)
Cheap for a rare part, some markings where it has spun on the crank but this part is still servicable.
Note: earlier twin shock GPz, J and R use a different crank nose taper. I bough this in error and will swap if you have an earlier one.
Collect from Stoke on Trent, free postage Uk, worldwide delivery ok.
PC probs, will try to get some pics loaded up soon