KW A4 B9 Sedan 2WD With Electronic Dampers H.A.S.

If you're looking to give your 2017-2020 Audi A4 (B9) sedan a sportier stance and improved handling, the KW Height Adjustable Spring (H.A.S.) kit is a smart alternative to traditional lowering springs. This kit lets you dial in your ride height with millimeter precision, even after installation, offering a level of customization you won't get from fixed lowering springs. It's designed to work seamlessly with your car's factory electronic dampers, so all your adaptive suspension features and driver assistance systems remain fully operational.

KW engineers these springs using high-strength chrome-silicon steel, with spring rates carefully tuned to match the specific characteristics of your Audi's OE electronic suspension. This ensures a sporty yet harmonious driving experience without sacrificing the car's inherent dynamic capabilities. The kit includes KW's ride height adjustment mechanisms and, where applicable, vehicle-specific bump stops with dust protection to help keep your factory dampers safe from road grime and debris. You get the benefits of a coilover-like adjustable ride height, but with the convenience of using your existing dampers.

The development process for these springs involves extensive testing, including time on the Nurburgring Nordschleife and at KW's own 7-post driving dynamics test center, ensuring they meet rigorous standards for performance and durability. This kit is a well-built option for achieving a lowered look and feel while maintaining the sophisticated electronic suspension system of your A4.