P1000m5 Door pin bushings

[bumperm]

I have the RB3's (haven't installed them yet, but will). I think RB3's design, with nesting halves that allow for a flange on both ends of the bushing, is better. That said, RB3 is using black Delrin while Garage Products is using oil filled UHMM. UHMW is more wear resistant to grit and grime, being up to 20 times more so than carbon steel. However, Delrin is structurally stronger and more creep resistant. I've used both, but not sure which would be better in this application . . . though I'd tend to lean towards the UHMW.

 

[bumperm]

we have been using them for 5 yrs and not 1 fail... I stand behind ours 100%

To be clear, I wasn't meaning to disparage your product in any way. I looked at yours and thought, I'll "simply" make my own, as I have a lathe (not CNC) and Delrin on the shelf. But for the time it would take me to do so, it made more sense to buy yours.
The fit of your nesting bushing halves couldn't be better and the overall quality is obvious.