'81 GL 100 brake issues

[Kaydee]

Greetings fellow wingers....

I have this old 1981 GL 1100 that I have been working on forever, fixing and cleaning her up. I have now hit a roadblock...I need to replace the rear brake master cylinder but according to the dealer here in good old South Africa it has been discontinued and i am ..&*$%^#

Any advice or suggestions for replacement ? I can not recon it as the "brake guy " that reconditioned it has damaged it too much under the rubber and it is now useless. Basically I need to replace from the arm connecting to lever up to hose running out to rear caliper..
The reservoir has a rubber "seal" inside which is also torn , is this replaceable and would it be a problem removing it completely?

Living in South Africa kind of makes it hard to get to the parts..please any advice would be highly appreciated.

Happy holidays Wingers !

[OldguyGlen]

I understand the limited availability in SA. But it sounds like you need a useable used part. Try the internet, but shipping to SA may limit you. Are there any bike breakers in SA ?(junk yards)
The used one might need some refurbishment as well, but seals are easier to find than master cylinders. Same for the reservoir.

I have seen on-line reports of owners substituting a different brand/model master cylinder and adapting the mounting bracket, etc. Mostly those were less than ideal solutions, but you could search ... maybe someone has found a good match ??

[Kaydee]

Indeed useable used would be awesome...i have feelers out to every possible motorcycle graveyard I could find

Guess it is going to be a waiting game now to see if they can help.
I have searched the net for hours on end , the rebuild kits are available although expensive and shipping to here is not a joke Shipping is more than the kit in some cases.

The search continues....