I own a 2000 R100RT and my abs unit failed.
From the bmw moa face book page some one turned me to a thread here about module masters: http://www.modulemaster.com/en/index.php
Today I called them up and told them what I have. They asked If I have the servo assist one ( I don't).
After a minute or so they came back on and said for $325 plus shipping they can repair it WITH a 5 year warranty.
would take a week turn around.
I was quoted $1200 for a new unit plus 4 hours labor buy a indie BMW shop.
Haven't tried the stealer.
Now I have 3 choices. Learn to R&R it myself, have a stealer do it, or convince the indie to do it ( he says He will only install a new one and no used one. would my rebuilt count?)
Now all I have to do is get the cash together for that. Tires and no ABS for now are in my future.