Maybe I am wrong. But I believe this is the story: Spool and Slipper are 100% locked between the front and rear of the vehicle. The Slipper only slips to the Motor. This puts to much force on pucks. Pretty sure Exotek says there equipment is compatible with pucks, but I would not do it. I'm not a big slipper person for Stock racking, and not sure a slipper is needed. Well, at least on clay.