Ball joint stud made from 4140 steel with an induction heat treated bearing surface for smooth operation and maximum life
Fully greasable metal on metal design eliminates the stock style nylon liner for improved performance and durability
Includes (2) upper and (2) lower
Ball joint boot is made from tear/wear resistant silicone polyurethane
Description
HD Ball Joint Full Set for TJ/LJ, XJ, YJ, ZJ (Dana 30/44) by Synergy MFG SYN-4120 Synergy Mfg heavy duty ball joints are designed to replace the factory ball joints that are prone to premature wear on lifted vehicles with large off-road tires.