Coil-Over Suspension
More serious enthusiasts and races require a much wider range of adjustment in their suspensions to cope with the demanding driving situations that they are presented with. In order to satisfy these needs, adjustable coil over suspensions were created.
These suspensions allow for a broad range of adjustment in a suspensions ride height, spring rate and damper rate. It does this through a combination of height adjustable springs and a threaded and adjustable shock that they are attached to. This spring and shock are usually matched at the factory to provide the utmost suspension precision. These systems are very expensive and are usually beyond the budget of the average enthusiast
For this reason, threaded sleeves were created to allow for ride height adjustment, without the cost of the accompanying shocks. Although not ideal, these suspension systems have become very popular for enthusiasts on a budget.
Full Coil-over(adjustable height and dampening)

Threaded Sleeve(height adjustable)
