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I haven't tried them, they're still new in the shrink wrap. You only need those thick spacers/washers if you're running no or very little shim to clear the threadless shank on the stud. Once you' have enough shim that you're past the threadless part of the stud you don't need the spaces at all. I can't confirm fitment beyond that, but i've heard of people running them. *shrug*