Review on Enhance Suspension Performance with MOOG K80591 Ball Joint - Trusted Quality by Scott Larson

If you buy them for Xterra 2000-2004, they won't work out of the box. The included grease fitting is straight, but our application requires a 90 degree angle. And don't think you can just install them and forget about greasing - they don't come pre-lubricated. This leads to a rapid failure. Go to an auto shop and buy some 90 degree Zerks and install them before you press in the BJ because if the Zerk strips the threads you will have to take it apart again. One of these BJs was sent to me pre-installed - a stripped thread in the mirror hole. Looks like someone had this part first and sent it back to Revane after screwing it up. Revain was able to send me a new one 2 days later so it worked just a little extra stress. Finally, I'm not too happy with how these blowjobs feel. Even after oiling, they still felt dry and rough. I went ahead and finished the install and crossed my fingers that they were ok, but I bought the Moog so I didn't have to worry about quality control issues. After a frontend overhaul with Moog, this isn't the only part that disappointed me.