Looking for suggestions on changing my lift on my 2013 JKU Rubicon. Currently I have a Teraflex 2.5 inch lift with Fox 2.0 shocks, Monster Control Arms and front/rear adjustable track bars. Since I added a PSC front and rear bumpers flat fenders and a full set of steel skids underneath my suspension is sagging and the suspension is bottoming out off-road when it shouldn't. So I want to add larger springs but I cannot decide which springs to buy, linear or progressive or what size 3" or 3.5 inch. I also don't want so much lift that the 35" Goodyear MTR's look small with the flat fenders. Anyone had this problem or have a suggestion as to what I should go with. I'm doing the Rubicon Trail in August and I can't see doing it with the Jeep set up like it is. I also thought about adding Teraflex Speed Bumps.

 

I have the TF 2.5" lift on my JK. My rear coils were sagging and swapped them out for Rubicon Express 2.5" coils, much better. They have a higher spring rate. My JK is heavy front and rear

 

Sounds like you have added a lot of weight to your JK lately. TeraFlex now offers a 3" Outback coil for JK's that are heavily loaded.
#1863200 front coil
#1864200 rear coil

The SpeedBumps are a great addition also, wither your going slow or fast. But I would address your coils first.

Joe

 

I have a jkur. I have rubicon express 3.5 lift with full bumpers and winch and I'm still over 3.5 with no sag. On the 4 doors that extra inch really helps when off-roading. I would also recommend a 4-6 inch shock with the larger springs.

 

How much weight can the TF 2.5" coils handle before starting to sag?

 

My TF 2.5 inch lift did not start to sag until I installed the full steel skids. Before with the PSC front and rear bumps and the winch it was fine.

 

I'll have a Rampage Stubby (no winch yet) and a Body Armor rear installed next week. Had plans on picking up the 2.5" in a few weeks so I was curious. I will eventually go to 35" and also add the TF hinge and carrier combo. Just want to make sure I was ok.