It is up to the installer to verify the proper ball joint style is being used.Ĩ009-1201 ball joints have been superseded by 8009-1204.Ĥ120-01 ball joints have been superseded by 4120-04. Use of the improper ball joint style for the axle housing voids our warranty. ![]() If your axle end forging bores have been enlarged to the point that non-knurled ball joints are no longer a press fit, knurled ball joints are required. We always recommend installing non-knurled ball joints until non-knurled ball joints are no longer a press fit into the axle end forging bores. Using the wrong style of ball joints can cause significant steering issues. Non-Knurled ball joints recommended for replacing non-knurled ball jointsĭue to these ball joints being tight tolerance, metal on metal ball joints, proper fitment is critical. Knurled ball joints required when replacing knurled ball joints that have enlarged the axle end forging bores Once broken in, the steering will be smooth and tight. During this time the steering may feel "sticky" or slow to "return to center". Metal on metal ball joints require a small break-in period of typically 100-500 miles to fully "seat" the bearing surfaces. Synergy High Performance Grease (4119) recommended New and Improved Ball Joints Compatible with all aftermarket axle shafts (including RCV) with no modifications neededįully Greasable metal on metal design for prolonged lifeīall Joint bearing surface area is considerably larger than stock due to elimination of the inner nylon liner for a longer lasting jointīall joint housing is manufactured from sintered graphite, bronze, and 1045 steel for a strong, smooth, bearing surfaceīall joint stud is manufactured from induction heat treated 4140 steel for maximum strength and smooth operationīall joint dust boot is made from wear/tear resistant black nitro-butile rubber (NBR) Synergy MFG's New And Improved ball joints are the result of actions that have been taken to address reports of premature wear on the previous iteration Product changes and manufacturing changes have both been made to guarantee you are getting the highest quality ball joints on the market. Get rid of that steering wander and play caused by loose or worn out ball joints. A must for vehicles with lifts and larger tires. These ball joints employ a metal on metal design to improve durability and performance. Replace your Jeep's factory ball joints with Synergy MFG's NEW Dana 30/44 Heavy Duty Ball Joint Set. Non-knurled ball joints recommended for replacing non-knurled ball jointsSynergy Manufacturing Jeep Wrangler TJ/LJ/YJ, Jeep Cherokee XJ and Grand Cherokee ZJ D30/D44 Heavy Duty Non-Knurled Front Ball Joint Set.Knurled ball joints required when replacing knurled ball joints that have enlarged the axle end forging bores.Notes: Synergy 4119 high performance grease recommended.Zerk fittings included for trouble-free maintenance.Low profile dust boots are made from thick nitrobutile rubber (NBR) to protect the joint from contaminants and eliminate any chance of tearing.Lower ball joint bearing surfaces are CNC machined from 4140 steel, heat treated, induction hardened, and ferritic nitrocarburized for extreme wear resistance.Lower ball joints are rebuildable on the vehicle without removal.Knurled and non-knurled ball joint housing options to fit any vehicle.Patent pending lower ball joints are adjustable so they always have the correct amount of preload.Kit includes all 4 ball joints and lower ball joint adjuster tool.Never need to replace ball joints again.Designed to last the life of the vehicle. ![]()
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