Review:
I received these parts from Charlie very quickly and the install was done. My first impression of these was, wow the ride is gonna suck. I was wrong.
These bushings are well made and fit thumb in ear tight into the EPS/DMS top hats without any issues. What I love about these is that there is a sense of where the shaft of the shock goes into the top hats. The rubber bushings you buy out of the box do not have a sense of guide of where the shaft moves to after its installed, its basically a free for all and the bushings wear pretty fast.
Below is a picture case in point. This is what a rubber bushing does if its not tended to after thousands upon thousands of miles of driving. The rubber bushing fails and it can cause the shaft of the shock to eat your EPS/DMS top mounts like so by having a wild shaft rubbing everywhere.
I have faith in Derilin, so instead of replacing the top hats, the Derilin bushings guide fits into the hole without issue and will be used as so. The second part of the Derilin bushing mounts on top stabilizing the shaft completely.
After compressing the spring and installing the Derilin, I was quite impressed immediately since now the top bolt has a means of where to stop with the derilin vs the rubber bushings which would just compress as far as you can turn the bolt and wear faster over time.
This is what 3 week old KYB Bushings look like after 2k miles of driving.
With that said. After the install, I was very happy as all noise would be eliminated. These bushings are highly recommended to anyone that has a strut/spring combo as these will be a long term investment. I have a few weeks on these already. No signs of fatigue at all.