Genuine OEM Audi Rear Shock Absorber Stop Buffer, part number 1EA511351D. This component is designed to prevent excessive compression of the shock absorber, protecting it and other suspension parts from bottoming out and potential damage. It is positioned on the shaft of the rear shock absorber. Made from durable, resilient rubber or polyurethane, it measures approximately 0.105m in length. Using a genuine OEM stop buffer ensures precise damping characteristics and long-term suspension integrity, crucial for ride comfort and vehicle control.