I found a few threads containing complaints about noises coming from the rear when the mazdaspeed shocks and springs are added to the 8. I also found a few people had posted about a similar noise found on the mazda 6's front suspension and claimed the fix for the 6 would also work on the 8. I did a little research at the dealership and found the TSB for the noise on the 6 which is Bulletin No. 02-003/04. The part numbers for these insulators are GMY0-34-081 for the lower and GMY1-34-081 for the Upper. The total price for the 4 insulators came to about $23. I spent quite a while trying to find the bulletin and part numbers so I hope this helps out anyone with this problem or who might be considering purchasing the shock/spring combo from mazda. I found the fix on other threads but could not locate part numbers for the insulators so I figured I would post them up for convenience.

-Dave

Related Threads:

https://www.rx8club.com/showthread.p...spension+noise

https://www.rx8club.com/showthread.p...spension+noise

 

I read about that a while ago just like you. but it might be better for you to search on the Mazda6 forum ?

 

I figured I'd save the users of this site some time. I even had trouble finding what I needed on the 6 site. All the info is there now, however I couldn't scan the TSB which would have been useful to put on my post.