EIBACH SILVER COILOVER SPRING - 3.75" I.D., Eibach 3.75" Inside Diameter Coilover Springs Available in a Full Range of Rates and Lengths, Maximum Travel in Combination with Smallest Block Heights, Legendary Eibach Off-Road Durability and Performance, Each Spring Individually Tested, Highest Linearity and Guaranteed Consistency, Coil Spring.