RockJock's 4" front coil springs that are included in our Johnny Joint® JK 2-door suspension systems, but may also be used in TJ/LJ/JK 4-door applications where 1" less spring height would be ideal. These springs may also be used in combination with our CE-9132F to address vehicle lean issues. These springs are a dual rate with a combined rate of 70lbs. and a free length of 21.6". Gloss black powder coated finish. If you need help choosing the correct springs for your Jeep - just call the RockJock sales staff!