This kit is used to open up the gap between the top bump stop and upper arm on the front of the vehicle after winding the torsion bars up so you are not creating a harsh ride on the bump stops.
They also allow for greater articulation on the front end.
Doing an upper ball joint flip and fitting spacers gives you more clearance between the upper control arm and the bump stops, which will allow you to turn the torsion bar up more which will give you more lift

The kit comprises of the following
2 x 10mm ball joint spacers made from steel not Ali

6x 12.8HT bolts
6 nyloc nuts
12 washers

This kit fits the following vechiles: