I think you mean the Synergy Suspension Jeep JK HD Ball Joint Set-PPM-8009-12 and thats for the full set (both sides)-
I can't comment on them, cause I don't have mine yet, but I've read good reviews and the fact that they use the same ones on Dodge Ram trucks/Ford F-150 trucks, makes em sound better to me, besides-
They come with ZIRC ftgs-KEWL, you can greasem-and I'll get mine when I get new gears !!
Looks good to me-