KW H.A.S. Porsche 911 (Type 991)

Starting with springs made from multi-coated chrome-silicon steel, these KW H.A.S. (Height Adjustable Spring) kits are built for a long life and are specifically tuned for your Porsche 911's factory dampers. Unlike traditional lowering springs that offer a fixed drop, the H.A.S. system lets you dial in the ride height with millimeter precision, even after installation. This means you can achieve a more dynamic look and potentially more agile steering response without sacrificing the comfort and functionality of your car's original electronic suspension system. All the driver assistance systems and comfort features remain fully operational.

KW's engineers develop these spring rates and parameters specifically for each vehicle, testing them extensively on the Nurburgring Nordschleife and in their own 7-post driving dynamics test center. This ensures the springs work harmoniously with your factory adaptive or electronic suspension, providing a sporty yet balanced driving experience. The kit includes vehicle-specific bump stops with dust protection to help guard your factory suspension components against road grime and debris, similar to how a full coilover system would.

This kit allows for a continuous adjustable ride height within a tested range, offering more flexibility than conventional lowering springs. You get a sporty and improved driving behavior without compromising the driving dynamics that make performance-oriented vehicles like the 911 so special. The kit includes everything needed for installation, including the height adjustment mechanisms and protective elements.