Using the Golf Mechanix spine finder, can’t find a discernible spine on an Aldila NXT Gen NV 55 X-flex. Is this typical for an X-flex?
Some shafts may not indicate a bias, or spine. Generally that means they are really straight and consistent. That is a good thing. I would not say that that condition is associated with the Flex. I have seen shafts in all flexes that do not indicate a clear “spine”. It is rare, but it does happen.