Metric Coilover Spring, 9-Inch, 14.0kgf/mm

Whether for a daily driver or a dedicated race car, these springs offer a significant upgrade over standard components. They are produced using Swift's proprietary HS5.TW material, a high-strength alloy that allows for a more compact spring design with fewer coils. This innovative construction leads to reduced unsprung weight and an increased usable stroke, contributing to improved vehicle dynamics. With a 9-inch length, 60mm inner diameter, and a 14.0kgf/mm (784 lbs/inch) spring rate, these coilover springs are designed to provide a noticeable increase in traction, smoother weight transfer, and enhanced ride quality. The use of advanced materials and design principles also aims to lower tire temperatures and provide a more predictable feel during aggressive driving. The usable stroke is 100mm (3.9 inches), with a maximum stroke of 122mm (4.8 inches). These springs are sold in pairs and are intended for universal applications, allowing enthusiasts to customize their existing coilover setups. The HS5.TW material offers a combination of being light, durable, and compliant, ensuring longevity and consistent performance under demanding conditions.