You are likely going to be between 4.5-5" of actual lift once all said and one unless you have a really heavy jeep and bump steer is due to geometry plain a simple. You typically have to replace the track bar bracket on the axle to do the flip. Their track bar may not be tall enough to do this and is a reason they say no. I would run it like they have it set up and see how you like it. If it is not bad then leave it alone but if you don't like the bump steer and the amount of side to side axle shift you are going to experience then you can also flip the synergy drag link and just install a new raised bracket.
Like the rear the more level with the ground the bars are the better it will handle.
My JKU is prob on the heavier side (steel skids, armor/fenders, sub box, supercharger, light bars, etc.). Evo coils "claim" to be a true 4", so I guess we'll see there...I'm hoping it is right near 4" due to garage clearance issues!
Here's the steering and track bar data from the build:
- Matched Housing Geometry, Pinion Angle, and Wheel Alignment for JK Suspension, Axle Width 68.5"
- Raised track bar mount w/RAM assist
-Steering Kit, Cross-Over Steering Package, Includes Tie Rod Assembly, Billet RH Steering Arm w/Factory JK Bottom-up Taper, & Steering Arm Mounting Hardware, Drag Link Sleeve, ***Reuse factory JK drag link***
- High Track Bar Bracket
- Matched Housing Geometry and Pinion Angle for JK Suspension
Still sound like a drag link flip should be in back of my mind?