I could not tell u on that one I have never heard the term slipper disc. I just know that when I bought it they were just testing the button style. So I had the style right before that.
I have pics but can't get them on here for some reason will text them if I get a number my computer is jack up all I have is an old Android phone that has internet.
Just telling u what south bend told me. I told them I wanted to hold at over a 1000 and they sold me this. And it was the owner that sold it to me too not just some paper pusher. Also my price Includes the billet large input shaft.
I have that same style clutch in my puller they called them "slipper disks" to me. I have the 3850 with a full season of hooks on it and it works great. GLWS and bump for a good price.