KW H.A.S. 2017+ Audi A4/S4 B9 w/ EDC

Starting with springs made from high-strength chrome-silicon steel, KW's Height Adjustable Spring (H.A.S.) kit for your 2017-2025 Audi A4 Quattro is designed to give you a sportier stance and feel without sacrificing the factory electronic damper system. Unlike standard lowering springs that offer a fixed drop, this H.A.S. kit uses threaded perches and included bump stops with dust protection, allowing you to dial in your ride height with millimeter precision, even after installation. This means you get a custom look and a more agile steering response that complements your car's performance characteristics.

KW engineers these springs with rates specifically matched to your Audi's OE suspension dampers and wheel loads. This careful tuning ensures that your factory adaptive or electronic suspension systems remain fully operational and work harmoniously with the new springs. The kit includes application-specific bump stops and dust protection to help guard your factory suspension components against road grime and debris, contributing to their longevity. Extensive testing on the Nurburgring Nordschleife and in KW's 7-post driving dynamics test center means these springs are developed with real-world performance in mind, aiming for a sporty yet balanced driving experience.

This kit is a significant upgrade over conventional lowering springs, offering continuous adjustable ride height within a tested range. It's engineered to work seamlessly with your vehicle's existing electronic suspension, maintaining all comfort and driver assistance features. You'll achieve a dynamic look and improved handling without compromising the sophisticated feel of your performance-oriented Audi.