I have a Rhino 850.
I just went and looked, but can’t find any identification on the cylinder.
I can measure the retracted length as that is how I park it. But I have no plans on hooking it up and extending.
Bore size? - No clue. Any way for me to find out (without disassembly? Lol.) I assume this is only important depending on how “loaded up” the blade is when you try to change angle? Dirt or snow?
Pin size? - excuse my ignorance, but what do you mean? The diameter and length of the pins at both ends that attach cylinder?
Here’s a couple pics
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