Weltmeister provides virtually infinite adjustment choices by using a sliding clamp, while other kits have no adjustment or limit the choices to a few bolt holes. And where others require removal of parts to make changes, our bars adjust by loosening and adjusting one bolt. Further chassis tuning is provided by adjustable drop links. Weltmeister uses a generous coating of cadmium for years of protection. And the bar itself is made from heat-treated aircraft alloy steel formed on a computer bender for uniformity this bar will have the same spring rate 10 years from now. Weltmeister kits are custom designed for ease of installation with a complete instruction guide included in every kit. For all 911, 912e, 911 turbo 1977-89 and 914 without factory sway bar.