ST Coilover Kit 05-11 Audi A6/A6 Quattro (4F/C6) Sedan

When you're looking to give your 2005-2011 Audi A6 Quattro a more performance-oriented feel without sacrificing everyday comfort, the ST X Coilover system is a solid choice. This kit is designed to let you dial in both the look and the handling of your car, offering a wide range of height adjustability so you can get that perfect stance and tire fitment.

ST Suspensions builds these coilovers with practical considerations for long-term use. The spring perches are made from a durable, friction-optimized polyamide composite with a stainless steel insert. This combination helps prevent corrosion between the strut and perch, ensuring that you can adjust the ride height smoothly for years to come. The steel struts themselves are galvanized for extra protection against the elements, and they include an integrated dust protection system with elastomer bump stops. This setup works to keep dirt and moisture away from the hardened chrome piston rod and the internal damper components, which are also protected by a multi-layered sealing package and a low-friction piston band. The dampers themselves are engineered by KW, a well-known name in suspension, to provide a precise and improved driving experience tailored specifically for your Audi A6.

These coilovers are built by hand in Germany, with each damper tested on a dyno to ensure it meets performance standards before it's boxed. The spring rates and damping are tuned by ST's engineers to match your specific vehicle application, aiming for that ideal balance between sporty handling and a comfortable ride for daily driving. You'll find the ride height adjustment straightforward thanks to the composite spring perch and the trapezoidal thread pitch.