I have the FKS 155 on my Volkl AC4. I don't have any problems with the brakes on the 82mm waist. You could probably go a little wider with out majer surgery. I have some Rossi Squad bindings (FKS185 in disguise) on my Gotomas with the release setting at 9. Easily released with my poles. The brakes easily clear the 105mm waist. There is a huge tutorial on the TGR website for bending the brakes to a wider setting. Seems to be the binding of choice of the Maggots.