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NP231 Slip Yoke Eliminator

Installation Walkthrough
In stock
SKU: 50-7906 | Brand: Rough Country
(5.0) | 1 Review(s)
Custom fit product - Verify Fitment!
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Jeep model NP231 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 our extended travel drive shaft, which helps to prevent driveline vibration and the rear ouput shaft from breaking. Read More

  • Install Time: hours
    Average estimated install time peformed by a professional shop or mechanic.
  • Features

  • Converts transfer case from slip yoke to a fixed yoke for improved off-road durability and performance.
  • Notes

  • For use with NP231 model transfer cases ONLY.
  • Designed with the most current design shaft found in the New Process Gear NP231. This current design shaft was introduced in 1997. Jeep vehicles using the early NP231 can still use our kit, providing that the needle bearings are removed from the stock drive sprockets.
We are proud to offer Same Day Shipping. If you place your order before 4pm (cst) your order will be shipped that day. Parts ordered must be in stock for the order to ship. Approximately 97% of all orders placed leave our warehouses within 24 to 48 hours(not including weekends & holidays). For complete details please click here.


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

Fitment Table

Years Drive Make Model
Jeep model NP231 Transfer Case
Always check the product's overview, for more important fitment information



Product Videos

Lifetime Warranty

Rough Country Suspension Systems offers a Lifetime Replacement Warranty on most suspension products. All products are warranted to be free from defects in material and craftsmanship for the life of the vehicle if utilized in accordance with the manufacturer's instructions for installation and operation of said products. Click here for more information

100% Satisfaction Guarantee

If you purchase a Rough Country Suspension product and you are not completely satisfied with any aspect of the product you may return it within 90 days for a full refund of the purchase price. Click here for more information.

Same Day Shipping

If you place your order before 4:30pm (CST), Monday-Friday, your order will be shipped that day. Parts ordered must be in stock for the order to ship. Approximately 98% of all orders placed leave our warehouses the same day (not including weekends & holidays). Click here for more information.

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