Glen, the threaded collar at the base of the spring, around the shock, is where the ride height is adjusted. It is easily adjusted with a special spanner that fits the collars. Have to adjust with weight off the springs. There is 4 in. of adjustment at the front shock. However, there is a ratio between ride height and spring collar height. ERA says it is 1:1.5. So a 4 in. span in spring collar adjustment equals a 6 in. span in ride height. The rear spring collar has a smaller span, looks like about 2 in. Matt is correct in that adjusting ride height, throws wheel alignment out.
