Superformance MKIII Custom Private Label Eibach Shock and Spring Set. These are the standard Shock and Spring Combination used on the New MKIII's. As time passes advances to our equipment evolve. These new Eibach shock and springs are a 1/2" shorter in the front than they're predecessor which accommodate the 18" wheels much better and alleviates bottoming out. This Spring and Shock set comes standard with 400-lbs spring rate all the way around. For custom spring rates please call.