if there is such thing as one. If you can imagine the plane that is defined by the surface that the front disk bolts to the hub and it's location between the inside of the dropout of the front fork. Is there a standard that most hub manufactures follow.
Okay here goes, Chris King makes two different disk hubs the new ISO style and the orginial Disco-Tech hubs now called Universal Disk Hubs. The ISO style is the set that is not fitting. I have to machine .035" off my adapter today just so the adapter didn't hit the rotor. I have a set of both.......and my problem is I have to readjust the disk caliper (Avid BB-7) everytime I switch wheels.
Here is my set up: 2004 X-5 with Float RLC w/TALAS. 185 mm front disk rotor.