The Eibach ESS Speedway Front Spring optimizes racing suspension with a 1000 lbs/in rate. Measuring 9.50 inches long with a 5.50-inch outer diameter, this single high-tensile steel spring is designed for universal front suspensions in race vehicles. Ideal for speedway racing, it ensures consistent response. Professional installation and tuning are required. Powder-coated for durability, it includes a limited lifetime manufacturer warranty.