Would anyone know the bore size of the Sierra Master cylinder please.
Cheers.
Steve.

Most are 22mm

Thanks, thats what was in the back of my very limp brain,
Cheers,
Steve.

Careful though, there are 4 types and 1 isn't 22mm, memory is getting really pushed now!

Managed to find a new one on fleabay, it is 22mm
Steve.