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  • Slip Yoke Eliminator (NP242J Transfer Case)( Jeep XJ-ZJ-MJ Models)

Slip Yoke Eliminator (NP242J Transfer Case)( Jeep XJ-ZJ-MJ Models)

$649.95 $499.95
(You save $150.00)
Brand Name:
Rough Country
40.00 LBS
Calculated in Cart

Product Description


1984-2001 Jeep Cherokee XJ 4WD

1993-1998 Jeep Grand Cherokee ZJ 4WD

1986-1992 Jeep Comanche MJ 4WD



Jeep model NP242J transfer cases have one glaring weak point. They use a slip yoke on the rear output shaft of the transfer case instead of having a fixed yoke and a drive shaft with slip splines.

This design works fine on the street but once you have lifted your Jeep and installed bigger tires on it, the stress on the slip yoke or rear output shaft is often too much. This Heavy Duty Slip Yoke eliminator kit includes everything to modify your transfer case. This kit does require an extended travel drive shaft, which helps to prevent driveline vibration and the rear output shaft from breaking.


  • Converts transfer case from slip yoke to a fixed yoke for improved off-road durability and performance.
  • Replaces slip spline output shaft with yoke which allows the use of longer dual cardan driveshafts.
  • Recommended for lifted XJ's, ZJ's, and MJ's with a NP242 transfer case to eliminate driveline vibrations from the factory rear drive shaft.
  • The factory NP242 has a 27 spline output shaft that is 1.172" in diameter, this kit will convert the output shaft to 32 splines and increase the diameter to 1.375".


  • For use with NP242J model transfer cases ONLY.
  • Does not work with NP231J transfer case.
  • For use on 27 spline output shaft only. Does not work if factory equipped with factory 32 spline output shaft.



SKU 50-7921
Est. Install Time 2-3 hours



  • 1 3/8in-32 spline rear output shaft
  • 356-T6 heat treated aluminum alloy tailhousing
  • 1310 c.v. yoke
  • Bearings
  • Hardware



1984-2001 4WD Jeep Cherokee XJ
1993-1998 4WD Jeep Grand Cherokee ZJ
1986-1992 4WD Jeep Comanche MJ
Jeep model NP242J Transfer Case
ALWAYS read all product page details for more important fitment information

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Product Videos

Jeep New Process 231- NP231 SYE Install - Slip Yoke Eliminator 14:58

Advance Adapters does a bench install of their 50-7906 New Process 231J Slip Yoke Eliminator Kit.

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