Stole a few minutes in the garage just now.... the 1999 KTM 640 caliper arrived (eBay purchase) and had some mungged up threads and more crap in there then I have ever seen... tap and die kit to the rescue! So, in the picture are 2000 640 legs, triples and axle, a 1999 640 caliper, a 1998 125 SX front wheel, and a new 300mm 640 rotor... Although you can't tell in this picture, the wheel is spinning for dramatic effect Anyone catch the bent spoke ?... I need to go and buy a replacement for that.... In a related note, the upper ear of the caliper mount bracket is making slight contact with the rotor. I think the Braking USA rotors are thicker than stock, but don't know for sure. I either need to shim the caliper mount bracket or grind a bit of it off. Don't know which I am going to pick yet. Next up, stripping the fork legs and shortening the travel... with no permanent negative effects!