
Originally Posted by
Dynatrac
Drew at OR EVO has answered this very well. The Rubicon electric diff requires unique shaft lengths. No other diff will use those shafts. Therefore I recommend going with our conventional PR44 housing, an ARB, and if you choose not to go with RCV, then Dynatrac will offer 4340, 30spl, front, 1350 joint, US made shafts imminently.
If you are after 35 spline shafts in the front, then I would not do so unless you also upgrade the wheel ends to our Pro Series ends and 1480 shafts. That’s the same as our ProRock60 wheel end. That is a bigger step up in cost, but is the ultimate 44-class front axle. That is what we installed on the Jeep NuKizer, and other custom, low body height builds.
The total low-cost way to go is with a PR44, re-use your Rubicon internals, Rubicon shafts, stock wheel ends, and stock brakes. The big drawback is that any time you need a replacement factory Rubicon diff for your front axle, it is about $1500 last time I looked. They are a good unit, but not anywhere near the durability of an ARB. The latest Eaton 44 E-locker is also another choice if you prefer electric activation.