Rear master brake cylinder

[ynotbiker]

Hi all , I am needing a rear master cylinder for my 1100GS . I have looked on various sites and nobody has one. Motoworks have a brand new one for £140 . I can’t find a second hand one on eBay etc . Does anyone know if other model parts would fit my bike . Or if anyone has one lying around I will buy it of you .
Thanks

 

[ynotbiker]

Looking on eBay looks like the 1100 rt one might fit can someone confirm.

 

[NeilDD]

Part number 34 31 2 314 726
There's one on eBay for £62

Linky

 

[ynotbiker]

Thank you seen that one from Germany need it before weekend.

 

[theoneandonly]

ps13 , buy a rebuild kit