theONLYbigHEAD

I have an 07 JKU. Last year I installed a 2.5" Rubicon Express lift, with bilstein shocks, and of course new springs. Running 35x12.5x17 tires if that helps. While driving even around town, if I hit any size bump the rear of my jeeps bottoms out on the bump stops. It seems to be worse if both rear tires hit at the same time, like on a dip in the road or something similar. I did install the included bump stop extenders (as recommended with the lift paperwork) should I try removing them? I also installed the included rear track bar bracket, to lower the track bar on the passenger side. I've read that it's possible the springs are not seated properly, not sure, anyone have any ideas on how to correct this issue, it's extremely annoying.

Rescue7

Have you a paint marker or some way to mark the top of the bump stop to see if the axle is contacting it. If you can see paint then you know your bottoming out but I would think your springs would have to be pretty week for this to happen.

Rescue7

Also if you have a GoPro. You could stick it under their to see what the hells going on.

Cat Dr.

I had that issue on my 08 with a RE4.5 lift. It was mainly when I was loaded to go wheeling. May not be the same as you. I installed Firestone air bags in the rear springs and my problem went away.

bryanluu

I can't believe nobody has asked this. How much uptravel do you have with the jeep sitting on a level surface (how much shaft is showing)?

Rob 12B1P

Maybe measure the height of the bump extensions to make sure you got the right size. Should be about 2 inches for 35's.

TheDirtman

some photos of the jeep coils, shocks, bumps at rest would help.

theONLYbigHEAD

Thanks for the input, I'll get some pics tomorrow and maybe a gopro video (you sir are a genius for that idea)!

theONLYbigHEAD

Hope these help.

theONLYbigHEAD

Bump stop are 2 inches and came with lift. Any help is appreciated.