Advance Adapters: This is the Strongest SYE Kit out on the Market.
This Heavy Duty Slip Yoke eliminator kit fits Jeep NP231 transfer cases. This kit features a new 1 3/8”-32 spline rear output shaft, 356-T6 heat treated aluminum alloy tail housing, 1310 c.v. yoke , bearings, fastening hardware, and detailed instructions.
Note: Advance Adapter has designed this heavy duty fixed yoke output shaft with the most current design shaft found in the New Process Gear NP231.
Fits 1987 to 2006 Wrangler
Fits 1987 to 2001 XJ Cherokee
Fits 1987 to 1992 MJ Comanche
Fits 1993 to 1998 ZJ Grand Cherokee
NP231 transfer case
Heavy-duty output shaft
18% larger spline diameter
54% increase in torque capacity
Fits 1987 to 2001 XJ Cherokee
Fits 1987 to 1992 MJ Comanche
Fits 1993 to 1998 ZJ Grand Cherokee
NP231 transfer case
Heavy-duty output shaft
18% larger spline diameter
54% increase in torque capacity
CA Residents: 
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
*Some models may require mode fork shift rail to be shortened. Add the Slip Yoke Eliminator to the Wrangler's NP231 transfer case and solve a couple of problems such as changing a damaged drive shaft on the trail without losing all the lubricant, or eliminating the noise, vibration and wear that develops when the NP231 is lifted. Another benefit is the beefier rear output shaft that provides a 54% increase in torque capacity. Other kit components include: specifically designed aluminum rear output housing, bearings, seals, snap rings, bolts and instructions. **CV rear drive shaft is required.
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov*Some models may require mode fork shift rail to be shortened. Add the Slip Yoke Eliminator to the Wrangler's NP231 transfer case and solve a couple of problems such as changing a damaged drive shaft on the trail without losing all the lubricant, or eliminating the noise, vibration and wear that develops when the NP231 is lifted. Another benefit is the beefier rear output shaft that provides a 54% increase in torque capacity. Other kit components include: specifically designed aluminum rear output housing, bearings, seals, snap rings, bolts and instructions. **CV rear drive shaft is required.
Installation Instructions Link: https://www.youtube.com/watch?v=jTOpd_pTb3g
Warranty Information
SYE KIT: One year Warranty against any Defects. No Warranty if broken by excessive torque, or abuse. Seals are a wear item and will only have a one year Warranty.