1980 CB750k Brake Caliper Piston

N

NPHLYT

New Member
This is not for my cafe project (not started yet), but for my daily driver. I am in need of a piston for the front brake caliper on my 1980 CB750k and cannot find one. The dealers can no longer order them and the other companies out there have the wrong size. If you have a caliper, or know someone who does then I would be eternally grateful. The size of the piston is 42.81 x 41mm.
 
Bump, for your sake and mine. Can't find these anywhere man. Someone save us :)

1981 CB750K (getting there now)
 
That's the same caliper but we are looking for new pistons. They appear to be obsolete

1981 CB750K (getting there now)
 
That's the same caliper but we are looking for new pistons. They appear to be obsolete
Click to expand...

I would assume the used caliper contains a piston... if you're having so much trouble finding just the piston, why not buy a complete, used caliper for $25?... Just saying ;)
 
I fear this may be the route to go. But really, a $25 used caliper needs new rubber and piston... Makes it into a $70 brake job. Add $10 if my banjo bolt doesn't fit the new one. Dual cam hondas are not cool enough to have the part availability of 70s singles yet

1981 CB750K (getting there now)
 
No, I'm looking for the single piston caliper. I'm entertaining the idea of the dual piston as I'm sure it's superior to the obsolete single piston design

1981 CB750K (getting there now)
 
Well... I have two of the two-piston calipers you can have for a song, but the pistons are kinda stuck in them. They'll definitely need a rebuild.
 
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