I got this shock as part of a bulk lot of parts and don't know its history. It seems to hold air decently well, I pumped it up to 100psi and it didn't lose any pressure over several hours when I came back to check on it. It seems like this is either a small travel shock or the shaft is locked in a compressed position. Priced lower, I have too many other projects at the moment to tinker with it.
6.25 inch eye to eye measurement as it currently sits.
Feel free to message me with any additional questions.