We love to help our customers get the most from their vehicles, and that means answering a lot of questions! Read some of the most common ones, and let's talk about what you need.

I have a vibration in my truck. How do I know if it is coming from my driveshaft?

Usually, if the vibration is the driveshaft, you will feel it in the seat. You will also feel a harmonic vibration (i.e., comes and goes).

I’ve just lifted my Jeep 6”. Do I need to have a new driveshaft build or can I still use the one I have?

Depends on the transfer case and the make and/or model of the Jeep. Most of the time the driveshaft should be replaced, lengthened and add a CV.

What measurements do I need to give you to have a new driveshaft built?

Depends on the vehicle. Usually it will be the center of U-Joint to center of U-Joint measurement.

How do I know if I need a CV Joint?

Each CV joint has two U-joints, each working one-half of the angle of the driveline angle, in relation to the transfer case or transmission. If the driveshaft angle exceeds 7-9°s on a single U-Joint, then a CV should be added.

Why would I still have vibration after my driveshaft is installed?

There are many reasons why you would still have vibration. One example is that the pinion yoke should be within 3°s of the driveshaft at standard right height. On lifted vehicles, degree shims may be required to raise the pinion yoke so that it is still within 3°s of the driveshaft. There are always exceptions to this rule: i.e., two-piece rear driveshafts; offset driveshafts, which would create a compound angle; full-time lifted 4-wheel drive vehicles (late model Grand Cherokee).

How do I know if I need a long spline?

If there were not enough travel in the slip yoke (i.e., 2” compression, 2” extension), then a long spline driveshaft would be required. 12” of spline usually covers vehicles used for off-road travel. Please call us at 1-800-256-6751 for more detailed information.

How do I determine how much spline I need?

A measurement would be required for driveline length at full droop and maximum compression.

How do I know if my driveshaft is too short?

At normal right height, if you have more than 1½” exposure of the slip yoke or your slip and stub, then in most cases, the driveshaft is too short. This could be caused due to a lift kit being installed. If you have lifted your vehicle, call us at 1-800-256-6751 for more detailed information.