This part is originally designed for the TLR 22 5.0 2wd buggy, so some extra parts will be required to make it work on the 22T 4.0. You will also gain a wider range of adjustment with the additional parts.
Additional parts required:
TLR334066 - 22 5.0 D block
TLR334063 - 22 5.0 Arm Insert Eccentrics
The extra weight just in front of the rear tires can help keep the rear of the truck planted in loose conditions.