BuckLisa

You might call them. The 4.5 has some parts to gain extra articulation by moving the shocks outboard, but I think that is it. The instructions are the same but differ on how you put in the bump stops and drop brackets if you use them. It was only $150 more?

tattedfire

you guys with the 4.5" kits....did you have to replace the drive shafts right away? Or at all?

BuckLisa

I replaced the front from the get go; still have the stock rear with no problems. You can keep the front stock shaft but you can't use the outboard shock mounts to increase articulation.

BuckLisa

Just sent you a PM

jboth

I replaced both right away. My smaller diameter 1310cv shaft has still managed to contact the tranny pan ever so slightly and add pinstriping to the ds. The rear is still pretty close to the gas tank and my evap skid but hasn't made contact with anything.

aristobrat

They recommend their 4.5" lift for 37s. Any advantage to doing their 3.5" lift + a 1" body lift instead?

I'm running their 3.5" Premium lift on 35s and I love it. Easy to install, too.

DCJEEP

Looks like it's just springs. Hmm So new drive shafts are all I'll need?

Seal

Not to hijack the thread or anything but if someone were looking for a complete suspension system what else would they need with the premium lift?

mhaines

Have the 4.5" premium and still running stock drive shafts with no problems "yet". I am looking at adjustable rear control arms to move the axle to center of wheel well. I went with the 4.5 due to the 3.5 being out of stock at the time and I didn't want to wait. Running Duratracs 315/70/17 for now, but am looking to go 37s when they wear out.

JKCliff

I did the driveshafts at the same time as the lift. I was told the stock shafts would not work at all. I read on several threads about the driveshaft falling apart with lifts of more than 2.5" lifts. I'm not one to wait until things leave me stranded.

I also went with the TF monster arms. I would recommend to others to wait on replacing the control arms. I am sure the TF gives me more flex, but how much I am skeptical about. My pinion angles are right on, but I am not sure they would have been off using the factory control arms. The factory arms are incredibily stout. I kept them for use down the road when I build my trailer.

I am incredibily pleased with the on AND off-road performance! Damn thing corners like a sports car (for a JEEP anyways) and flexes very well off-road...as seen in pictures.

For those of you wishing you'd done the 4.5", I'm here to say you should have ! But a 1" BL will get you the bigger tires!