I found the Campy and Mafacs interchange quite well. I have bars taped with both type clamps imbedded. I can change levers from one to the other by matching the washer and nut to the same stud. This is on 2000 and Competion levers, I don't know about the Racer. While this won't win a cycle show, it works for me. Dickey Greer West Monroe,La USA
I'm looking for some Mafac Brake Lever Handle Bar Clamps complete with the T-bolts. Preferably with the wide stainless steel kind of bands.