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KZ650c Master Cyl refurb

Posted: Mon May 19, 2025 10:09 am
Author: Bill P
Morning Gentlemen
could anyone put me in touch with someone who could rebuild me a rear master cylinder for my 78 kz650c
Beer tokens waiting :)

Cheers Bill

Re: KZ650c Master Cyl refurb

Posted: Mon May 19, 2025 1:11 pm
Author: warren3200gt
Bill, they are simple enough to do. The issue you'll have is finding a rear cylinder seal kit!
However luckily the front mc seals are the same. I'd guess single disc b1 front master would be the one for your rear as it's a 1/2 in mc. Double disc seal kits should be the 5/8 size. Might check your rear mc size before ordering a kit.

Re: KZ650c Master Cyl refurb

Posted: Mon May 19, 2025 7:35 pm
Author: Bill P
Thanks for reply warren , yes the kit is very elusive but i will give your suggestion a try :up

Re: KZ650c Master Cyl refurb

Posted: Tue May 20, 2025 7:21 am
Author: KeithZ1R
Bill P wrote:Morning Gentlemen
could anyone put me in touch with someone who could rebuild me a rear master cylinder for my 78 kz650c
Beer tokens waiting :)

Cheers Bill


The C models were mostly 14mm bore tourmax do a kit for the FS1E MC and the seals are the same size you just have to carefully transpose them to your piston

Re: KZ650c Master Cyl refurb

Posted: Tue May 20, 2025 8:25 am
Author: Bill P
Thank You for reply Keith , i will look into that and if necessary find someone with delicate fingers not rough shovels like mine :)