So I recently went from a 2.5" TJM progressive lift with the XGS "gold" shocks (9-way adjustable) to a Slee 4" with the EMU shocks (N60070L & N60071L). I didn't know what I was really getting myself into as no one around me has the Slee 4" lift, so I couldn't really "test drive" it. I was really happy with the TJM, but I needed a little more room for the new tires, and I didn't want to bump-stop the heck out of the suspension.
Once I got it installed, I was ecstatic to see that it was level. Looks like the combination of stuff that I've got is just the right amount of weight for this Slee lift. I debated a bit with Christo on the phone about going to the heavy springs, but I'm glad I didn't.
I was also worried about the ride quality - but after driving on it for a bit now, it's hard to really tell the difference in "ride quality".
Overall I gained about 1.5" from the TJM lift.
Hopefully this helps someone else debating the myriad of suspension choices...
If you want a 4 inch lift that has all the parts you need to get your suspension back into proper geometry, I would look at this lift. I have had it on my 80 for almost 10 years.
IMPORTANT: Spring rates must be selected based upon the current weight of the vehicle (stock or aftermarket armor), not in anticipation of weight. Selecting spring rates for anticipation of added weight will create drivability issues. Use tabs to step through component selections - certain...
sleeoffroad.com
This is a lot of stuff but it really makes a difference in your on-road drive quality as well as your off-road capability.
Here is their 2.5 inch lift so you can see the difference in cost.
NOTES: IMPORTANT: Spring rates must be selected based upon the current weight of the vehicle (stock or aftermarket armor), not in anticipation of weight. Selecting spring rates for anticipation of added weight will create drivability issues. Use tabs to step through component selections -...
sleeoffroad.com
Another thing I would mention is that when you go to a 4 inch lift, you are probably going to go to 35 or 37 inch tires for it to look right. You will probably then also change your diff gears to 4.88 (35s) or 5.29 (37s). This is yet another cost.
It is MUCH cheaper to go with a 2.5 inch lift because the vehicle mostly retains its original geometry. The difficulty is you don't gain the clearance you get with a 4-inch lift. I went with the bigger lift in the end and I have been VERY happy with it.
