What is the MPF of the Project X PX 6.0 stiff shaft used in the Callaway XHOT 10.5 PRO Driver?
I do not have the exact specs of that proprietary version of the PX 6.0 that came in the XHOT driver. My best guess is that it would be similar to the PX build from a couple of years ago. In that case, the 6.0 would probably be a 4C1M. I am only guessing, really, because the shafts sold and branded to the OEM’s are not always the same build of shaft that is sold in the aftermarket, even though they may be branded exactly the same.