Hi,

I need rear brake master zylinder (used) for my K1100RS

Cheers,
Tarik

A lot of guys are now running Chinese rear master cylinders with great results. Check Aliexpress  they can be had for around $15.00 complete. There are posts on fitting procedures which are not that complicated. See Link http://www.motobrick.com/index.php/topic,9364.msg76252.html#msg76252 or https://www.k100-forum.com/t14939-replacing-rear-master-cylinder-with-a-chineese-one#175459 WARNING do not use the reservoir supply hose that comes with the master cylinder it can degrade and disintergrate.
Regards Martin.

MartinW wrote:A lot of guys are now running Chinese rear master cylinders with great results. Check Aliexpress  they can be had for around $15.00 complete. There are posts on fitting procedures which are not that complicated. See Link http://www.motobrick.com/index.php/topic,9364.msg76252.html#msg76252 or https://www.k100-forum.com/t14939-replacing-rear-master-cylinder-with-a-chineese-one#175459 WARNING do not use the reservoir supply hose that comes with the master cylinder it can degrade and disintergrate.
Regards Martin.

Hello Martin,

Thanks - I will leave it as a last option, before try to trace the original one also on eBay and from Motorworks UK