I am not sure of its purpose. I think it has something to do with harmonic vibrations.... but.... really don't know. I put mine back on. The isolation pads on mine were in good shape.
Your noise could be coming from the axel perch holes being wallowed out. also you want close to the same amount of threads showing on your U bolts. if not the bottom plate is cocked on the axel. I have seen that make noise. Did you do the work or have it done? What did you torque them to? the icon bolts are larger diameter than the stock 1/2 inch. I wouldn't be afraid to go to a higher torque spec. pooping/ cracking /making noise is not normal. something is done wrong or not in the correct place.
I bought my dever+2 from a guy here he said they pooped and made noise. they sent him a new set. I installed his old set on my truck. they have been on the truck a while now and don't make a sound. so take that for what it is worth. LOL not much.
Your noise could be coming from the axel perch holes being wallowed out. also you want close to the same amount of threads showing on your U bolts. if not the bottom plate is cocked on the axel. I have seen that make noise. Did you do the work or have it done? What did you torque them to? the icon bolts are larger diameter than the stock 1/2 inch. I wouldn't be afraid to go to a higher torque spec. pooping/ cracking /making noise is not normal. something is done wrong or not in the correct place.
I bought my dever+2 from a guy here he said they pooped and made noise. they sent him a new set. I installed his old set on my truck. they have been on the truck a while now and don't make a sound. so take that for what it is worth. LOL not much.