So my current se up is Teraflex 2.5" BB with 1.25" Rough Country BL and skyjacker 7000 hydro shocks. I am wanting to add 4" springs in replace of the stock and keep the set up. Will my shocks be alright? Will I need any other upgrades? I drive a 2007 4 Dr jku sport. Thanks!

 

I would be much more worried about pinion angle then shocks at that point. When you do a 4 inch lift new track bars and control arms are needed.

 

Are you saying you want the 4" springs + the 2.5" coil spacer??
If not Your going to want new shocks at that's height, you will have barley, if any down travel.
Most likely need a new front drive shaft if you plan on offloading in disconnecting sway bars.
I would strongly suggest an adj. front trackbar to recenter the axle.
And either control arm drops or new control arms.
Extended brake lines
Longer sway bar links
Possibly a draglink flip if you have bad bump steer.
Your honestly better off just buying a 4" kit TBH
Almost everything needs to be different from the 2.5" bb

 

Thanks for the advise!

 

[QUOTE=BClanton;3616132]So my current se up is Teraflex 2.5" BB with 1.25" Rough Country BL and skyjacker 7000 hydro shocks. I am wanting to add 4" springs in replace of the stock and keep the set up. Will my shocks be alright? Will I need any other upgrades? I drive a 2007 4 Dr jku sport. Thanks![/QUOTE

Sound like a bad idea. You should only use 1.25" spacers or less. Sell the BB spacers and use smaller ones. You will need shocks for 2-4" lifts plus adj. control arms and front TB.