Slip Yoke Eliminator Kit for NP231 Jeep Cherokee & Wrangler
- Fits the NP231 transfer case in 1984–2001 Jeep Cherokee and 1987–2006 Wrangler 4WD
- Requires an aftermarket CV driveshaft — does not work with the factory driveshaft
- Converts to a fixed-yoke design to reduce lift-related driveline vibration
- Early NP231 cases work if the needle bearings are removed from the stock drive sprockets
- Bolt-on install, no cutting or drilling — downloadable installation guide available (3-5 hours)
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For use with NP231 model transfer cases ONLY. Does NOT work with factory driveshafts. An Aftermarket CV driveshaft is required for use. 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. Fitment on this page is based on the manufacturer’s application data.
About this part
Slip Yoke Eliminator Kit, fitment-checked
A slip yoke eliminator kit for the NP231 transfer case in 1984–2001 Jeep Cherokee and 1987–2006 Wrangler 4WD models (Rough Country 50-7907). Converts the factory slip yoke to a fixed yoke to firm up the driveline and cut lift-induced vibration. An aftermarket CV driveshaft is required — it does not work with the factory driveshaft.
On a lifted Cherokee or Wrangler, the factory slip yoke is a common source of driveline vibration. This kit converts the NP231 transfer case to a fixed-yoke design so you can run a double cardan CV driveshaft and correct the driveline angle. It fits the NP231 only, and only with an aftermarket CV driveshaft. The design matches the current NP231 shaft introduced in 1997; earlier NP231 cases can run it if the needle bearings are removed from the stock drive sprockets. Install is bolt-on with no cutting or drilling — a downloadable installation guide is available, and typical install time is 3-5 hours.
Specifications
Specs
| Brand | Rough Country |
| Part number | 50-7907 |
| UPC / GTIN | 00843030189471 |
| Shipping weight | 15 lb |
| Country of origin | US |
| Category | Performance › Drivetrain |
| Installation guide | Downloadable PDF |
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