KW H.A.S. Audi A4 S4 (8K/B8) Avant Quattro All

If you're looking to give your Audi A4, S4, A5, S5, or RS5 a sportier stance and improved handling without sacrificing the functionality of your factory electronic suspension, KW's Height Adjustable Spring (H.A.S.) kit is a smart way to go. This system offers a significant upgrade over traditional lowering springs by allowing you to dial in your desired ride height with millimeter precision, even after installation. It's designed to work seamlessly with your car's original adaptive or electronic dampers, ensuring all your driver assistance systems and comfort features remain fully operational.

KW engineers these kits with vehicle-specific spring rates, crafted from high-strength chrome-silicon steel. These rates are carefully tuned to complement the characteristics of your factory dampers, providing a more agile steering response and a dynamic driving feel without compromising the vehicle's inherent performance capabilities. The kit includes application-specific bump stops and dust protection systems to help shield your factory suspension components from road debris, extending their lifespan. This approach means you get the benefits of a custom coilover setup—adjustable ride height and optimized performance—while retaining the comfort and technology of your stock suspension.

This H.A.S. kit is a well-built alternative for owners who want to lower their vehicle and enhance its driving dynamics. It’s a popular choice for those who appreciate the ability to fine-tune their car's appearance and handling, offering a sporty yet harmonious driving experience. The system is rigorously tested on the Nurburgring Nordschleife and in KW's own 7-post driving dynamics test center to ensure it meets their high standards.