Recently, Fox changed the bottom of their bump stops. On their old style bump stops the head of the pad's bolt and nut stuck out. On their new style bump stops the bolt head and nut are countersunk. This changed the diameter of the shoulder on the bump stop pad. See below example.

Recently, Fox changed the bottom of their bump stops. On their old style bump stops the head of the pad's bolt and nut stuck out. On their new style bump stops the bolt head and nut are countersunk. This changed the diameter of the shoulder on the bump stop pad. See below example.