Originally Posted by Maertz
are you moving the front lower mounts further back and up above the frame slightly?
Moving them back changes the OEM geometry and expose your links to more rocks. The separation of the arms is critical when building a suspension system. There are a lot of things going on. Pinion dive or movement changes caster effecting the way the JK handles. Anti-squat numbers changes.
The OEM JK geometry (mid arm) is perfect for 40" tires with up to 12" of shock travel. We utilize the OEM lower control arm mounts. John Currie has built and continues to lead the field.
The rear Currie RockJock 70 hi pinion keeps the drive shaft out of the rocks and provide great angles. The Currie JK 4" lift suspension is the premier JK mid arm lift. Here we built 7075 aluminum arms which we can do because the axles are built slightly wider to insure the tires don't get into everything
2" lowers and 1.5" upper control arms