7. JKS also offers a slip-yoke eliminator conversion for the stock TJ transfer case. This setup converts the rear driveshaft to the more preferable fixed-yoke-type output. The output shaft shown here must be installed inside the factory transfer case. To do this, the case must be removed from the vehicle and each case half must be separated on a work bench. Once the original shaft is removed, the new shaft can be installed and the case halves can be put back together. This modification improves transfer-case life and allows for a much stronger slip-style rear driveshaft.