X Factory’s new hub camber plates are made from 3mm carbon fibre to fit the aluminium AE rear hub carriers, replacing the standard moulded ones. The X Factory plates improve your car in several ways. Firstly, you get two sets of two camber plates, so four in all. One set, with four ball stud holes that are the same height as standard. The other set has three holes that are 0.072” lower than standard. The lower ball stud gives the car better balance in corners because it does not shift as much weight to the outside tyre. “I have been testing this for more than a year,” said chief engineer Paul Sinclair, “and I have tried many different heights. 0.072” is perfect, and my car is faster.”
Secondly, they are 3mm thick rather than 2.5mm like others on the market so should be stronger. The camber link plates come with black 0.030” spacers to extend the ball stud so the ball cup does not interfere with the hub carrier, as well as two Real Men Wear Black locking nuts to secure the ball studs.

Source: X Factory