The AST 5100 Series Shock Absorbers Coil Over Audi A5 B8 is a performance suspension system designed to provide superior handling and stability for your Audi A5 B8. The shocks feature a mono-tube design with an inverted strut, a large piston, and a progressive damping system for superior performance. The shocks are adjustable in both compression and rebound, allowing you to customize your suspension setup to meet your needs. The shocks are also corrosion-resistant and feature a durable anodized finish for long-term reliability.