The new billet aluminum arms 555-60572 can be used with Anti Roll Bar 550-40096, if the rod ends are changed from 7/16" to 1/2" size and the new vertical links are used. The old style existing axle brackets that came with 550-40096 came with 7/16" holes for the rod ends, and will need to be drilled out to fit larger 1/2" rod ends.