Synergy Manufacturing Non-Knurled HD Ball Joints - Set of 4

Sold in sets of 2 or 4 to replace a single side or both sides of the vehicle.

Heavy-duty, greasable, metal on metal design for significantly increased wear resistance and prolonged life

Ball Joint bearing surface area is considerably larger than stock due to elimination of the stock style inner nylon liner

Ball joint housing is manufactured from sintered graphite, bronze, and 1045 steel for a strong, smooth, bearing surface

Ball joint stud is manufactured from induction heat treated 4140 steel for maximum strength and smooth operation

Ball joint dust boot is made from wear/tear-resistant black nitro-butile rubber (NBR)

12 Month Unlimited-Warranty

Jeep Wrangler JK

Jeep Grand Cherokee WJ

Compatible with all aftermarket axle shafts (including RCV) with no modifications needed

Synergy High-Performance Grease (4119) recommended

Metal on metal ball joints require a small break-in period of typically 100-500 miles to fully "seat" the bearing surfaces. During this time the steering may feel "sticky" or slow to "return to center". Once broken in, the steering will be smooth and tight.

Knurled ball joints required when replacing knurled ball joints that have enlarged the axle end forging bores

Non-Knurled ball joints recommended for replacing non-knurled ball joints

Due to these ball joints being tight tolerance, metal on metal ball joints, proper fitment is critical. Using the wrong style of ball joints can cause significant steering issues. 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. 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.

Use of the improper ball joint style for the axle housing voids our warranty. It is up to the installer to verify the proper ball joint style is being used.

Specifications