These are custom King 2.5 bump stops we use in our stock length lower control arm and long travel Slapper equipped suspension kits. We’ve spent extensive time developing these with King exclusively to maximize bottoming control. They have billet eyelets top and bottom that bolt right into our chassis mounts and billet slapper arm. These come standard with 2? of travel but have an 1/2? internal spacer that can be removed if you’re wanting a 2.5? stroke for custom applications.