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We are the new owners of a pretty little 2017 JK Sport S in Xtreme Purple and first things first.... spending more money.

This excellent little JK has a 3.73.

I am in the process of ordering a rear Air Locker and want to confirm the spline count beforehand. Anyone know for sure?

I googled, checked my build sheet and checked this forum first without a solid "YES" answer.

Fun things planned/ already ordered:
- 3.5" AEV Lift
- 35x12.5x16 Duratracs (I have a front axle truss ready to go in too, don't fret)
- Rear ARB Locker (this is where you come in)
- Chopping some fenders
- Putting on my PS Brawler Lite Bumper / 12" Light bar / 10000lbs Winch / 4" pods and other fun stuff removed before trade
 

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Front axle -- Dana 30 has 27 splines and the Dana 44 has 30 splines

Rear Axle -- Non Rubicon have 30 splines, same length axles.
Rubicon axles have different length due to the way the e-locker is
designed, and have 32 splines.

If you have an e-Locker from the factory you have a 32 spline rear, if not then its a 30 spline rear
 
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