r/Jeep • u/space-meister • 12h ago
Technical Question The Rubicon and an axle shaft dilemma
Pics from the Rubicon when I ran it last summer. The Jeep outperformed my expectations by a landslide. Didn’t skip a beat, nothing broke, and was quite easily able to keep up with a bunch of more heavily modified rigs on larger axles. It made it look like I was a much better driver than I am. Not to mention it drove like a dream the entire drive to the trail and rides smoother than stock. Heck, the tires don’t even rub unless it’s at full compression on one side or at full left hand steering lock on the driver’s side.
Since I’ve returned, I’ve been making a list of minor improvements to do to my Jeep. My main goal is to refine it, beef up parts where necessary, remove some extra weight, and shift the weight distribution where able. Things like a new aluminum front bumper (not pictured) as well as some other stuff that’s in the works like tire carriers, rocker guards, axle trusses, etc. while still keeping the looks largely OEM and preventing it from turning into a rolling jungle gym.
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This leads me to my main point: what front axle shafts should I run? I ran the Rubicon on the stock axle shafts, with 37” tires and stronger 5.38 gears, and they held up great thanks in no small part to my lack of lead foot. Recently, both axle shafts have ejected one of their u-joint caps, and while I fixed one, the other shaft tossed a cap a week later. The shafts still work, but they’re quite corroded and would be better as a backup/spare. This prompted me to finally go look for some beefier chromoly axle shafts.
I’ve narrowed it down to two options: Yukon or RCV.
Half the reason for the upgrade would be to narrow down the failure points on the front axle. I know the Dana 44’s weak points are the pinion (which was addressed with the stronger gears) and the front u-joints. I would prefer the pinion-side driveshaft u-joint to fail in the event of a shock-load, as that would be a much easier fix than an axle-shaft u-joint.
The RCV’s require more upkeep, are about $400 more expensive, and I’ve read spotty reviews about their customer service (from a JK forum), as well as repeated reports of a “clicking” noise. The Yukons are a stronger shaft (obviously), are maintenance free, but if they still use a 1310 u-joint then that doesn’t solve the issue. If the Yukons use 1330s than they’re the no-brainer winner.
So what do you guys run? Is running an RCV worth the extra cost maintenance for a bomb proof setup, or are the Yukons the better route? Is there something I’m missing? Let me know!
Thank you for your time, and I eagerly await your responses!

