FROM MANUAL TO POWER

You don't need power for disk brakes. "The secret" if there is one, is the size of the master bore. And of course that the brakes are actually working as they should, the disks in good shape and proper selection of pad material and break in. That is, the disks, / pads are not glazed.

My 67 has been apart for some time, but last it was together had 4x disk brakes and the original 67 Master. I could lock up the brakes at highway speed, no problem. I'm 74 now, and my legs weren't all that strong a few years ago.