Bilstein 5100's have a stock height setting plus 3 settings; .85", 1.75" and 2.5". The main difference between these and other height adjustables is that these are a shock only, meaning you use your old springs or throw on new ones. Adjustable coilovers such as Toytec, fox, Icon, etc come with the spring too are adjustable from 0-3" to any height inbetween. They are also re-buildable, where as the Bilsteing 5100's are not. Bilstein 5100's are around $200, while the coilovers go for $500+ (more realistically around $700-1000).