Reviews for Synergy Manufacturing PPM-4120 Ball Joint Set for 84-06 Jeep Wrangler TJ, TJ Unlimited, YJ, Cherokee XJ, Comanche MJ & Grand Cherokee ZJ

Good solid fit and fast shipping!

easy to install like the toughness of the product

Shipped fast. Looks to be of good quality. Only thing I didn’t care for is there’s really not a good way to angle the lower ball joints where you can grease them after installation.

DO NOT BUY. The old ball joints did not have this issue, they were simply warn out. Having an alignment done did not resolve the issue. What did resolve the issue was pulling these ball joints out and replacing them with Spicer ball joints (Spicer ball joints are also cheaper) . The jeep drives great now. This seems to be a common problem being reported all over various jeep forums. avoid these ball joints at all cost.

I bought the synergy ball joints 2 years ago. The original set was installed with a 3 1/2 inch lift kit. Had 10 miles on them and took it to have Pennsylvania vehicle inspection. It flunked because of bad ball joints. No off roading was done in those 10 miles. Quadratec was great and sent replacement parts immediately. Now 2 years later and only 16 thousand miles of city street driving they are bad again. These are supposed to be heavy duty for off road use. I will never put a set of these in again. I greased them twice a year so it's not a maintenance issue.