Works Performance nitrogen charged remote canister rear shock. It was just rebuilt by Schmidty Racing in AZ, so it's 100% like new and ready to go. It came with my BMW K75 project bike that I didn't realized was lowered by the previous owner until after I got the shock back. It's about 30mm shorter than stock so I replaced it with a brand new to me used shock that's 350mm. Rebuild was over $200 so I'm just wanting to get my money out of it.
Specs: 320mm eye to eye (center), 55mm stroke, upper eye is a bit larger than 12mm (and might have removable eyelets), lower mount is slightly larger than 11mm, but 19 with the eyelets out. The old parts are shown just because it shows what was replaced.
I have no idea if it will fit your bike unless you are shooting for a lowered BMW K75, and if you are, I think the side stand is a short version and will be getting replaced in the near future with a stock length version. I'll make you a deal.