" The C hub has the same hole positions at the A hub but the holes are lowered 2mm. This is almost used in conjunction with a the shaving of the carbon U-Brace. The "hump" on the ubrace is about 2mm high. So, shaving the brace and lowering the hub mount with the C hub, will overall lower the entire link 2mm. There has been great debate on what the C hub actually does for the handling of the car. Some say it makes the rear rotate better in the corner, but allows for more power coming out and better "square" up. C Hubs more most often used on medium to high bite tracks. A hubs are most often used on lower bite tracks. The big question becomes what is high or low bite."

I tried to make this clear and simple. I am more than happy to try and clean it up, if it is not clear.

Like i said the results seem to vary. On lower bite tracks the C Hub and Shaved brace cause my rear to skate and become very loose. I feel that on higher bite tracks when the rear is too locked in it helps with rotation. I have heard some say that they feel like it adds to much traction to the rear. According the to JC guild i linked, lowering the entire link increases traction. But that was not my experience on low to medium bite tracks. If you just shave the u-brace and dont use the A-Hub, it will have the same affect as removing ball studs, because it lets you go lower than zero washers. Raz posted a few pages back that he has tried A-Hubs with a shaved brace and 0-1 washers and liked it. This is not a common setup, but like i stated, it is something you have to try and decide for your self. The Avid upper hubs are nice because they are both the A and C hub. So adjustments are pretty easy and you only need 1 set of hubs for both.