Here you'll find a number of basic components which are all dimensioned to be the same as the original parts used on Nortons,
BSA's and Triumphs. Many of these can be interchanged, because the rod thread diameter of choice was ¼”BSF, for many years. The only exceptions
to this are the later (1968-on) Triumphs and BSA's, which changed to ¼-28UNF (the Ariel Arrow and Leader also used ¼-UNF, from the beginning,
as far as I know). This thread also appears on the rigid-framed Triumphs (including the Sprung Hub models), where we have utilised the teardrop shaped
clevis, with a ¼”-UNF thread, which is from the 1969-72 twin-leading shoe front brake linkage. It is identical, apart from the thread. The individual
product descriptions give more detail.
Standard rod lengths vary from 17-1/2” to 23”, so there are plenty of opportunities to make up your own assembly, for that special project.