Reviews for Rubicon Express Rear Progressive Rate Coil Springs for 07-18 Jeep Wrangler JK

A great way to soften the ride on any lift kit with linear rate springs!

Excellent replacement for older lift springs. The progressive coils provide a better ride. Direct replacement for any 2.5 inch lift spring.

Greatly improved all around ride comfort.

Not bad.

I purchased these 3.5" progressive rate coils to replace my 3.5" linear rate Rubicon Express coils for my JKU and they sit about an inch shorter. so if you are replacing for a smoother ride be aware that they are going to be shorter.

Too weak for me, they allowed too much sag negating my lift and clearance. Maybe they would have provided a nice soft ride, but I'm not giving up lift to get that so I had to return them. I gave up maybe 5/32 inch in the rear and 9/16 in the front.

After two years of running these on my JKU, they were completely “unsprung.” Each coil sat on each other and this resulted in significant danger when driving the vehicle as it would go into an uncontrollable bounce. This happened first on the rear and at a slightly slower rate on the front.
I absolutely do not recommend this spring for any setup. My JKU is heavier because of significant armor and winch additions but this shouldn’t not have resulted in total failure of the spring after only a couple years.