well i dont know how much more it would have cost.they already made the ring why not leave the lip off the wheel so its a beadlock?i dont seems they went that far why not ane step farther.
but yeah give pro-line some time they will have some out.you can always use the rears for the slash and use some hexs they will bolt right on.but myself i still would rather glue my tires.alot less of a chance of something comming apart.and ending your race.