Yonaka Honda Civic EF 88-91 Spec 1 Full Coilovers Suspension Shocks Springs Struts JDM USDM Fully threaded mono tube shock absorber, Rubber dust shield protecting piston for long life All aluminum upper mounts 3-4" height adjustment Adjustment tools included Front springs: 12kg / 180mm Rear springs: 6kg / 200mm Inner bump stop to prevent damage caused by rapid compression impacts Wide range of height adjustment without changing the spring compression Bottom of the shock is threaded to allow height adjustments without having to shorten the suspension travel