I pulled my tri hubs out of my XF's and 3 of the 4 bearings were bad. The new tri hubs have NO rubber on them. All plastic.
Can they get any cheaper? The wheels looked like he!!, flash all over them, looked terrible.
Not replaceable bearings. For 30.00/ea, I can hardly setup and machine snap rings and replace the bearings. Maybe once I accumulate I pile of them I will.
I have bounced of a lot ugly ditch stuff and have not any problems. With the way they bolt together, I think it would be pretty touch to break them. The bearing will fall out before then imo.