No troubles with RCVs after nearly 80,000km. Moderately (ab)used but I tread more carefully Offroad these days. I've regreased them every 6-12 months.
Have outlived the flimsy D44 housing, even with above mentioned reinforcements.
Lack of outer seal solution remains a concern, but mine haven't missed a beat apart from one plastic boot cracking.
Nothing against decent aftermarket cromos & U joints but I'd probably go RCVs again.
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2008 Black Rubicon Unlimited.
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