The AST 5100 Series Shock Absorbers Coil Over for Audi A4 B8 are high performance suspension components designed to improve the overall handling and ride quality of the vehicle. The shocks feature a threaded body design with a large range of damping adjustments, allowing for precise tuning of the suspension. The shocks are also designed with a larger piston, providing increased damping force and improved ride control. The shocks are also corrosion resistant and feature a durable construction, ensuring long-lasting performance.