I purchased this shock off of EBay only to find, after I had it rebuilt by Ohlins, that it raises the rear of my 1995 K75 ABS by about a 1 inch (30mm).
The Ohlins model number is a BM002 Type 46HRCS and while it will work on K75/K100s (it actually came off of a very low mileage K75RT), it's made for 1990-1992 BMW K100RS and K100RS ABS. If interested or unclear if this shock will work, my suggestion would be to measure the length of your current shock -- this one measures 352cm eyebolt to eyebolt.
Cosmetically this shock looks new with very little patina showing and after being completely rebuilt by Ohlins in December, has not been used. I will send the Ohlins invoice upon request. Asking $850 (which includes ground shipping).
For questions or high-res pics, please email me armoredveh@aol.com.
TIA, Bill Shaw