As for compressed and extended lengths. Radflo never released them to me as they were "proprietary" I can get extended lengths. As for compressed. Send hulk hogan to my house to compress them for me. These bad boys are 2.5 bodies. I'm not that tuff
Maybe we can start with the extended length and then the length of the exposed shaft to find the stroke length (did I just really type that?) to get a compressed length.
For anyone interested these are roughly $800 a pair with the piggybacks new. Good price here. If I had a reason to buy them I wouldn't hesitate to make an offer.