This is our 4" rear coil spring that is included in our Johnny Joint® TJ suspension system. In heavily loaded TJ or LJ (Unlimited) applications, this spring may not provide a full 4" of lift. In this instance, see our CE-9131RH3 spring for a little extra height boost. Additionally, combinations of these springs may be used to address vehicle lean issues. This spring is a dual rate with a combined rate of 79lbs. and a 17.75" free length. Gloss black powder coated finish. If you need help choosing the correct springs for your Jeep - just call the RockJock sales staff!