027lug

Go measure one, from hole to hole is usually 4" on the drop brackets, I used to be a pro comp dealer/installer, all the kits I've installed worked that way, I would never put a leveling kit on top of a lift kit, it's like stacking 2 leveling kits on a stock truck or stacking blocks, it's a disaster waiting, if your drop brackets are a full 6" it might be okay but if they are only 4" than your asking for trouble

schissler

You were obviously installing 4" lifts then.

If you have struts that extend 6" no company would give you a 4" dropped sub frame. It would be 100% impossible to even stack a levelling kit on a truck with this scenario due to your CV Axle joints being at an extreme angle.

THEY ARE DESIGNED TO MAINTAIN FACTORY SUSPENSION GEOMETRY. Everything will be 6". Sorry guy. Measure twice.

027lug

I'm speaking from experience here, I didnt pay much attention to until my friends dodge was in a major accident due to a blown out ball joint, he added a leveling kit to a 6" lift kit, the drop for the strut was 6" and the drop brackets for the lower control arms were 4" so it was basically a 4" lift with a leveling kit.

if you read the box on a torsion key leveling kit it says it maintains factory ride and geometry, everyone knows that a torsion key kit puts more tension on the T-bars to create lift which causes a stiffer ride and changes the geometry, when a company states their lift maintains factory geometry it means they stay inside a tollerance that the factory suspension parts (ball joints, cv shafts, TRE's) can handle without causing damage to those parts, I'm sure there are lifts with 6" drop brackets out there but the ones I delt with were 4" so to the OP, if you are planning on adding a leveling kit to your 6" lift make sure your lower control arm drop brackets are a 6' drop and not a 4" drop

to anyone that dont belive what I am saying just because you dont belive me dont make what i'm saying not true, it just makes you ignorant, with all the manufacturers of suspension lifts do you really think they are all the same as yours, of course not, there are many different designs. the fact that you choose to igonre a safety warning makes you the retarded one, it will take 2 minutes to measure the lift brackets to make sure it will be safe to add a leveling kit to a lift kit, your not the only one on the road, if your aftermarket lift breaks and causes an accident your legaly responsible for damage to other vehicles and people, why risk it over a quick measurment.