This is a 8100 series Penske double clicker shock. It is 340mm eye to eye comes with a 700# spring. It was serviced by TSE. It has a couple scratches on nitrogen canister. $450 shipped. Will send photos if interested.
This came off a 2016 FZ07 race bike I just bought. It had a special link because the shock is too long for FZ07. I compared it to my SV shock and it is exactly the same. TSE had it listed as a R6 shock.