clutch master cylinder

[wayned]

I've been a fool and not read the instructions on the clutch reservoir cap (before adding dot 4). Consequently the seals on the clutch master cylinder and slave cylinder have gone, I've ordered a slave cylinder from the dealers and was wondering if anyone knew of a master cylinder rebuild kit supplier, BMW do not list one. The cost of a master cylinder aswell would be a bit too steep.
I'm thinking these probably are used on other bikes aswell or failing that does anyone know who actually makes them ? I know the brakes are brembo for example.

Any help would be greatly appreciated.

[marc]

Magura.

Not sure. Magura Blue Blood hydraulic fluid seems to be a match for the BMW stuff which is where the Magura guess comes from.