1" billet aluminum spacer blocks for your ZJ rear sway bar. These spacers allow you to run your stock sway bar or a heavy duty rear sway bar in conjunction with an aftermarket exhaust system without clearance issues. These spacers do not hinder rear sway bar performance. Instead they allow the sway bar to move freely without coming into contact with your exhaust. Get a pair today and get rid of the unwanted clunks and flex restriction.