Not very clean but here is a side by side with a mag drive on the left and spoke on the right. Appears the mag is casting part 040, and spoke is 041.
So these are both from KZ1000 disk brake wheels? I didn't expect them to be so different.
So that leads to another question. I have a rear Lester mag wheel intended for a KZ1000 (disk brake) that I've never tried to use. Did the folks at Lester assume that their aftermarket wheel would be replacing a spoked wheel? Did they design it to accept the spoke wheel sprocket carrier? If so, I might need to find one of those...
I'm not sure how to answer that. I guess I could try to find one of my mag wheel carriers and see if it fits the Lester. I'll have to dig through some boxes.