Older GPR stabilizer, I believe this is a v2? No leaks and seems to work well, but is probably 10 years old or so, so I am sure it could be freshened up with a rebuild. Seems to work well on my 05 KTM supermoto, biggest difference I notice is hitting bumps/bridges at high speeds, stays really smooth and helps a lot with headshake. $250 shipped within US, or of course can do local cash deal too!