For whatever reason, the original (and used up into the 80s) Campy brake blocks were the same dimensions as the rubber MAFAC brake blocks.
Remember in Pro racing there was MAFAC (and others) long before there was Campagnolo!
"Oh, the horror...the horror." I occasionally used to use the soft MAFAC brake pads in Campy brakes. Back in the 70s, aside from the cosmetics, I never liked Campy brakes because I found the brake blocks TOO hard!
I never cared about "modulation". if I wanted to polish my rims I would have used Universal 61 or 68 brake pads.
I always wanted to feel some retinal detachment whenever I've had to lock up the brakes! ;-)
And to answer your question, yes, they do fit MAFAC brake pad holders.
One hint, tighten the rubber part in a vise and gently tap on the aluminum part of the carrier, NOT the stud, to get them started.
Another suggestion that I haven't tried yet, someone with more experience than me suggested that I grind 1mm off of the face of the Koolstop pads to get down to the softer inner material.
Chas. Colerich Bike bell hell! The squeal from my MAFAC brakes gets their attention, faster... Oakland, CA USA
Todd Grantham wrote:
> Anyone have any experience using the Koolstop "campy replacement pads" in Mafac brakes? Everyone who sells them advertises that they fit Mafac brake pad holders but I don't see how without modifing the pad or the holder. How did you do it?
>
> Todd Grantham
> Fort Wayne IN