SYE - Slip Yoke Eliminator Kits

231 Heavy Duty SYE kit
231 Heavy Duty SYE kit

We offer SYE kits for the following transfer cases:

For more information, please simply click the transfer case model that you have. There you will see expanded information for such things as pricing and any measurements that my be needed

Often referred to as a Slip Yoke Eliminator (SYE) fixed yoke kit, short shaft kit or tail shaft conversion. This kit does not actually eliminate a slip yoke but rather moves it to a different part of the dive train. On the original application the provision for compression and extension of the drive shaft is a function of both the drive shaft slip yoke and the output shaft on the transfer case. After the conversion, this provision for compression and extension becomes a function of the drive shaft only.

Tom Wood’s Custom Drive Shaft offers a huge selection of Slip Yoke Eliminator (SYE) kits for a wide variety of transfer cases. For many applications, you can even get the drive shaft as part of a packaged deal. Or, you can get the SYE kit as a stand alone item. Either way, we are sure you will be pleased with the quality and performance of the products we offer.

After the installation of a SYE kit, you will then have a drive shaft that is longer than stock which will reduce joint angles and the ability to use a Constant Velocity (CV) double cardan type drive shaft. This will reduce drive shaft vibrations for smoother operation and a longer life on the related components.

With this conversion you should be able to keep the transfer case at stock height. You will however, want to be sure to pitch the differential so the pinion points more or less directly at the output of the transfer case, maintaining a minimal joint angle at the differential end. For example; if the slope of the drive shaft is 15° the pinion should be between 12° and 15°. With 13° or 14° being ideal. Again, this is just an example and your actual numbers will probably be different. For a simple method of determining these slopes/angles, please refer to this link for a simple method, using very simple tools.

Figure 1:

Any of these conversions will give you a fixed yoke/flange on the rear output of the transfer case.

The first step would be to identify the transfer case model that you have. This can easily be done by looking on the tag that is on the back half of the transfer case.

Figure 1:

In some instances, you may need to confirm the spline count on the rear output of the transfer case (there will be either 27 or 32).

If you have questions, or would like to place an order, please contact us.