ABT suspension springs to lower the ride height ABT suspension springs lower the ride height in combination with the serial shock absorbers or the ABT ISC shock absorber set. The lowering of app. 30-40 mm varies depending on the car equipment. Data apply to the standard suspension (not to sports suspension). ABT Fahrwerksfedern Ordernumber: 5J0400010 Variation: für alle Modelle bis 900 kg Achslast ABT Fahrwerksfedern Ordernumber: 5J0400020 Variation: für alle Modelle ab 901 Kg Achslast