In attempt to fix the pop/knocking sound from the rear.

$159.99 F
$155.99 R
http://powergridinc.com/swaybar.asp

 

Are you sure thats where the popping sound is coming from? It is a common failure point, but I believe there were other reasons for the rear popping noise as well. I would try to determine the cause of the noise before dropping that much cash on something that may not need to be replaced. Also, are you running aftermarket bars? If not take it back to the dealership if you are still within the warranty period

 

They were there even before I put my Hotchkis on. I have proof of reporting the popping sounds (In the worksheet infiniti gave me a year ago).
I'm running HKS coilovers too.
They were just put in a week ago. Obviously the sways & coilovers are not the source of the problem.

 

Getting new end links fixed my popping sound in the rears however I just got the same oem ones put on. (I have 350z H-Tech's and Stillen sways). I'm sure mine will go bad eventually and then will think about aftermarket ones.