Hellwig adjustable end links are engineered to maintain proper sway position when vehicle heights have been altered. For instance, when lifting your vehicle 4 inches you must also increase the end-link overall length by an equivalent of 4 inches. Made with heavy duty components and materials these end links will provide years of maintenance free service. Each unit is designed to handle high degrees of articulation with specially designed polyurethane bushing, high tensile strength threaded studs and durable heavy thread cores. Most of these end links are adjustable in 3 inch increments and can be installed with common hand tools. Powder coated components and zinc plated hardware are standard in all Hellwig end link kits. Install it yourself or have a professional install it. Either way you get outstanding.