Originally Posted by AliBaba
EXC400, 2006, +-2mm:
Straight accross (center to center) 125mm
One hole to the next (center to center): 65mm
Are you sure about this measurement? I had a manufacturer of aftermarket KTM hubs tell me that the front rotor bolt diameter on ALL KTMs 125+ is 143mm. He said that 125mm is the diameter of the rear rotor bolt pattern on a lot of the dirt models.