Lippert Components 191024 JT's Strong Arm Fifth-Wheel Jack Stabilizer Kit RV fifth-wheel jack stabilizer kit comes complete with everything needed for DIY installation Designed to eliminate side-to-side and front-to-rear RV movement and shaking Stabilizer bars form triangles at front and rear jacks to prevent shaking and swaying The kit was designed for installation by your dealer or the do-it-yourself on fifth-wheel RVs with less than 58 inches between the two front landing gear legs