Replace the OE Garbage
It’s no secret the JK Wrangler’s OE front upper and lower ball joints are junk. When we disassembled our Sleeper JK project, it had only 62 miles on the odometer and the lower ball joints were already shot! No matter what else is done to the woefully inadequate JK frontend, the upper and lower ball joints have to be replaced.
Poly Performance offers its Synergy Suspension upper and lower ball joints, which are much stronger than stock because they’re a sintered-metal-on-bushing design that can be greased. Besides the JK, Synergy ball joints are available for TJ/LJ, YJ, ZJ, and XJ Jeeps. They’re available in a set of upper and lower ball joints per side, or full sets of four. Get the full set. You need them.
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