The Synergy Manufacturings 3/4" inch Front Coil Spring Spacer is designed to provide ¾” of lift, which allows you to run up to a 32” tire with the front and rear spacers installed, and still maintain a factory ride quality. They have been crafted from high density polyurethane and will install on top of the stock spring with no welding or drilling.
I run a AEV 2.5in DualSport lift on my 2016 JK. I bought these to level the front of my Jeep due to the sagging AEV front springs that AEV claimed was with in spec due to my winch, bumper, etc. these work great and put the front height back to wear it was when I first installed the lift.
These fit perfect and went in easy, leveled the front just right from the sag of a heavy bumper and winch. They seem to be of high quality also, they should last a long time.