Garage Star Delrin door bushings
- Product Review (submitted on March 20, 2019):
These bushings help make the car a little more rigid. It could be the placebo effect but I'm pretty sure that the car rattles a lot less when driving over bumps.
Definitely follow instructions and only tighten the bolts a little snug, but loose enough to move the bushings around. This allows you to close the door to position the bushing correctly. Finally, you tighten the bolts the rest of the way, the door takes a small amount of extra push to close but nothing excessive.