This is SSDutch’s rear driveshaft.  It’s kind of a shame - new enough that it still has the sticker on it, but badly dinged in two spots and “S” shaped at this point.  I’m guessing this might be why the transfer case has a pretty good leak.

I was just going to get it re-sleeved, but once it was off the Jeep it felt a little lightweight for my preferences.  Maybe I got spoiled by the heavy duty rear driveshaft that I had on Dutch.  Anyway, after talking to the driveshaft shop long enough I walked out having ordered a whole new driveshaft in 2” HD tubing as opposed to the 1.75” this has, with a larger slip joint.  This one only looked to have 1” of travel, and was compressed all the way with the Jeep sitting at rest (granted, I’ve removed 160 lbs of steel so it’s sitting higher than before).

Here’s the replacement. 

Cost at D&R Driveline in Jenison, MI was about $167 - pretty fair, in my estimation.  Looks to be a quality piece.  Here’s a look at the length difference: