The ST XA-Height/Rebound Adjustable Coilovers for the 05-11 Audi A6 (4F/C6) Sedan Quattro are a set of performance-oriented suspension components designed to provide improved handling and stability. Featuring adjustable height and rebound settings, the coilovers allow for fine-tuning of the ride height and suspension characteristics to suit the driver's preferences. The coilovers are constructed from high-quality materials and feature a corrosion-resistant finish for long-term durability. Additionally, the kit includes all necessary mounting hardware for easy installation.