So I was checking out the new RV's in Quartzite RV show. Found some upgrades on the bigger RV suspension on the new RV's. I'm thinking all of these are standard on the new RV's. They are bracing the spring hangers with a V shape pice of strap steel. Making it harder for the hanger to flex and break off. Also they are putting better spring equalizers on the units. I saw the Morryde CRE3000 & Road Armor both of these come with the heavy duty shackles with wet bolts. I upgraded my suspension a couple of years ago.