who has installed a 4+Products rear bumper? Help needed (4 Viewers)

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Jun 29, 2025
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Location
Montana
I got my new-to-me 60 last weekend and it came with a 4+ rear bumper installed. The swing arms are almost completely siezed and it’s nearly impossible to get into the rear cargo area.
I got the weather caps off and I’ve been trying to get the swing arms off so I can lube/replace the bushings (or perhaps just leave them off). I’ve been working for two days to get them off the bumper spindles and I’m stumped. I’ve emailed the manufacturer with no response. So two questions:
1) during installation, is there a particular orientation that lets the arms drop onto the spindles? Is there some sort of interior keyway feature that prevents them from coming off or are they just smooth spindles?
2) was there a crossmember between the frame rails that was removed, and do I need to find a replacement if I go back to a stock bumper?

Pictures for reference, thanks.

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The swing arms just slide down on the spindles. Remove the tire, hi-lift jack, and fuel cans from the swing arms then take the hi-lift and use it to jack up the arms as near the spindle as you can get.

A cross-member has to to be removed to mount the 4+ bumper, so if you remove the 4+ you'll need to source a good cross-member to remount a stock bumper.
 
I experienced the same issue on my 40. Dave Gore responded to my email and this was his solution.
It worked well for mine but also hadn’t had them on for a long period of time.
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