Thinking about an upgrade? This short demo helps you evaluate the fit. In this video, we walk you through the Firestone W01-R58-4061 air spring, showing its key features, compatible OEM models like DUNLOP S91541NB and GUOMAT 2B4061, and technical specifications. You'll see how this 12x2 style air ride helper bag performs and learn about its installation points, air inlet setup, and stroke range for heavy-duty applications.