From a 1989-1992 GSXR1100, thought it would work on my Bandit project but no dice... I guess I should have checked before I sent it off to RaceTech last week for a rebuild~!!! So I'm out $200 plus the purchase price of the shock. Would like to get $400 USD for it, but am open to reasonable offers.
I would have to say 15mm. I removed the threaded height adjuster, and got a total length of 22mm. Can send a pic if you'd like.