R6 Rear Brake MC upgrade

[chris-seed]

Hi guys,

Does anyone know whether I can remove the threaded piece of metal that attaches the master cylinder to the brake lever? The reason being; I have an R6 Brembo master cylinder that I was going to fit on my 1989 fzr600. However, the threaded metal piece is much longer on the original fzr600 master cylinder. I presume these pieces can't be removed easily, as it just keeps spinning and doesn't go anywhere? Here's a picture to illustrate.

[willandrip]

Remove the rubber boot and then the circlip that is under it.
In fact I cannot recall if the circlip also retains the boot.
The adjuster will then drop out.
The end you cannot see at present is dome shaped and fits into a socket in the m/c piston only loosely,that's why it's spinning.


Make sure the swapped adjuster is a good fit in the replacement m/c (the circlip is the only retainer) before you use it.

You may find that the m/c requires more/less travel than previous depending on the replacements dia.

Remember that once the adjuster is removed that the piston and fluid is able to escape.

[chris-seed]

Thanks for the help. My current rear brake is rubbish so I wondered if a new master cylinder would improve things at all.

Thanks again.