hi, new member here so sorry if im using the site incorrectly.

so, im getting ready to redo my rear subframe. my car is a street car im also interested in tracking/autocross, and id like the car to be capable regardless. my question is, im installing racing beat dtss delete bushings and i was wondering about the trailing arm rearward bushings, by the knuckle. theres the bushing on top and pillow ball on bottom. supernow sells a pillow ball top (pic attached), and i was thinking about replacing the bottom pillow ball with the oem one. is this a good idea? or are there better options for handling? ill also be buying the supernow forward trailing arm pillow ball bushings, the ones near the individual camber links. does anybody have any better ideas for the setup?

 

The RB DTSS delete bushings will eliminate any movement in the tri-axial floating hub. Essentially, the hub will be solid mounted to the trailing arm. So, the pillow ball bearings serve no useful purpose. The stock pillow ball at the bottom of the hub almost never wears out. I still have the original pillow ball bearings in my car with over 350k miles and they're as tight as ever. I don't know what condition yours are in, but if you need to replace them the seals are no longer available from Mazda.

 

As mentioned above, I’ve also removed my pillow ball and found it to be in good condition, and not worth the high cost of an oem replacement.

the only other option is the third point which whiteline does offer an eccentric bushing which allows camber adjustment at the hub. I’ve mentioned it in recent posts, along with its part number.