KW H.A.S. 18+ Audi S4 (B9) Sedan w/o EDC - 50mm

Starting with high-strength springs made of multi-coated chrome-silicon steel, KW's Height Adjustable Spring (H.A.S.) kit for your Audi A5 or S5 Sportback (B9 chassis) offers a significant upgrade over traditional lowering springs. Unlike fixed springs, this kit lets you dial in your desired ride height with millimeter precision, even after installation, giving your car a sportier stance and improved steering response. KW engineers specifically tune the spring rates to work harmoniously with your vehicle's factory electronic dampers, ensuring that all driver assistance systems and comfort features remain fully operational. This means you get the dynamic look and feel you want without sacrificing the advanced technology your Audi came with.

The development process for these springs is rigorous, involving extensive testing on the Nurburgring Nordschleife and at KW's own 7-post driving dynamics test center. This ensures the spring rates are perfectly matched to the OE suspension damper characteristics and your vehicle's specific wheel load. The kit also includes application-specific, high-quality elastomer bump stops with dust protection systems. These protect your factory suspension components from road grime and debris, helping to prevent premature wear and tear. This combination of precise adjustability, OE electronic compatibility, and robust construction makes the KW H.A.S. kit a solid option for achieving a customized look and feel.

This kit is designed to work with vehicles that do not have factory electronic suspension (EDC). The included height adjustment mechanisms allow for a tested range of lowering, typically limited by the factory dampers themselves. You'll achieve a sporty and balanced driving behavior that complements the performance nature of your Audi.