Swift Springs have been coined to be one of the best springs in the world. Widely used in many famous racing series such as GT and F1 series. With the backing of 80 years of racing and industrial spring experience, Swift have created top-notch springs from hundreds of engineering concepts and theories. The end product results in the lightest, most durable, and most linear spring rate on the market. Swift springs not only can change the spring rate, but can offer other advantages such as noticeably lighter unsprung mass, smoother weight transfer, better ride quality, lower tire temperature, and increased ability to predict vehicle reaction. SPRING RATE USABLE STROKE MAX STROKE MAX LOAD 225 lbs/in 4 kgf/mm 7.36 in. 187 mm 9.02 in. 229.06 mm 1901 lbs 863 kgf