The Koni Sport (Yellow) Shock 09+ BMW Z4 - Rear is a high-performance suspension shock designed to improve the handling and ride quality of the 2009+ BMW Z4. This shock is constructed from high-quality materials and features an adjustable damping system. This allows the driver to customize the suspension to their own driving style and preferences. The shock features a yellow powder-coated finish for superior corrosion protection and a stylish look. This shock will provide improved handling, increased stability, and a smoother ride for the 2009+ BMW Z4.