I was curious what the factory length of cables of the Kraken Brand antennas, and if I could possibily order some custom length antenna cables directly from Kraken? I ask this because I’m not sure of a good place to custom order custom length cables with the SMA Connectors and have them be correct to work with the Kraken
Our cables are 3-meters in length. Sorry, we aren’t able to provide cables at a custom-length.
I ended up just buying some extension SMA cables and wrapping them in Nylon spiral wrap. You’ll want to identify both ends clearly before you spiral wrap, otherwise you’ll need to meter which cable is which afterward. 
No fair confusing the Kraken!
Since they are mass produced, I trust they are the same length. A NanoVNA would answer that, just measure the cable without a termination and note the first point where you see a short (the reflection of the open end)
I have my antenna cables also nylon wrapped, so at the joint I just connect #1 to #1 and so on, with a drop of Deoxit to help weatherproof the connection point.