I've been cleaning out the shed and have two sets of about 30mm (approximate, cause I couldn't find a measuring stick at the time) bar risers, one off the 640 and one off the 450, complete with bolts which should fit any KTM triple clamp, $30 a set plus postage.
I will actually measure them and possibly post a pic if anyone is interested.








(never been crashed, ridden in the rain or had a Honda owner near them)............... true!