Honda '79 CB750K Master Cylinder Replacement

Evening all,

I've got an Australian '79 Honda CB750K that I need to rebuild, or replace the master cylinder on. It has two single calipers on the front.

Looking at the master cylinders on DCC for example, are the 5/8" piston units the correct size for this setup?

Thanks,

BigEv

I'm facing the same problem bigev.
I've got a CMx 250 front end that's a single disc. The caliper is a two piston design and even after extensive googling I still dont know if the Dime City Cycles Cylinder would do the job.

Did you figure it out?