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XR 392 Axle Flange Compatibility

Graphite JL

Well-Known Member
First Name
Jeff
Joined
Apr 2, 2025
Threads
5
Messages
166
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215
Location
Romeo, MI
Vehicle(s)
2018 Sahara Unlimited
I picked up a 0 mile set of 2026 XR 392 axles to swap into my 18 Sahara that currently has a 186/200 combo.

My question is, the new axle has a rzeppa joint for the driveshaft, but my current driveshaft has a ujoint and flange adapter. Does the bolt pattern on the flange adapter line up with the rzeppa flange so I can use my existing driveshaft?

I've read a bunch of threads and nobody mentions the need to swap driveshafts, but they also don't say what style they are starting with.
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