The Detroit Speed multi-leaf springs have a spring rate of 175 lb/in. Our leaf springs are available in either a 2" or 3" drop from factory height. The difference between our leaf springs and others is that our leaf springs not only give you the handling you are looking for, but do not sacrifice ride quality. The springs have a tapered leaf with an anti-friction pad between each leaf to help provide a smooth ride. Spring Rate: 175lbs/in Spring Free Length: 4in Arc Height Total Spring Height*: 5-1/4"