Per…. I will try a set of those levers, next time I order. They look useful.
That type is more comfortable.
Here when installed those I bought last year, polished version. Aftermarket stock held under clutch lever.
OK IC, same "stroke" just a different profile. I used the complete 4:1 master on my K2 just to get things working, guessing the "honda" lever may not fit it.
https://4into1.com/reproduction-kawasaki-complete-brake-master-cylinder-use-on-honda-too-15-8mm/
Look like the MC's my bikes have. From David Silver.
I ordered a better looking cap to them at the same time.
The infamous 4:1 says it is a Kawasaki style master but fits others. I just wanted the front brakes to work ;-). And now they do. I guess a nicer looking lid could be good, what did you find ?? I'd also like to come up with a riser for the left hand mirror to put it at the same height as the right mirror is when mounted to this master. The height of the mounting looks similar to OEM. My bike had mis matched mirrors and I recently replaced them with "genuine Honda" but R and L are physically same height to the RH ends up higher than the LH.
Scroll down
https://www.davidsilverspares.co.uk/CB750K2-FOUR-1972/And find the master and cap
The master is found almost everywhere where parts are sold.
I see now they have another cap with more text.
Here an example if filter CB750 K2.
Same for the other CB750 and other bikes in need of same size.
My K6 has dual brakes which work fine.