Cam Key ????

I think it's probably because they don't know "where" you're going to end up installing the cam so they just leave it out. That way you can put whichever offset key you want when you degree it.

Of course, I don't use the offset keys anyway, since they are hard to find. I just get a timing set with the nine keyway crank sprocket.

I tend to agree though. It should come with a zero key.....even if it's uninstalled.